330
The Airbus A330 is the widebody that outlasted its own replacement plan.
- Even
- Composite
Where 330 fits
Why 330 is special
Designed alongside the four-engined A340, it succeeded precisely because two engines became sufficient for transoceanic flight while four became uneconomic. The A340 ended production in 2011; the A330 continued.
Same number, different meanings
How 330 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Designed alongside the four-engined A340, it succeeded precisely because two engines became sufficient for transoceanic flight while four became uneconomic. The A340 ended production in 2011; the A330 continued.
- Everyday life
Industrial citric acid is produced by fermenting sugar with Aspergillus niger. The name and the E-number suggest citrus and the manufacturing route has nothing to do with it.
- Technology & computing
The A330 and A340 were developed together as twin and quad variants. Improving engine reliability made twins legal over oceans and fuel cost made quads uneconomic, so one sibling outlived the other by well over a decade.
- Geography
Constantinople was founded in 330 at the junction of Europe and Asia and of the Black Sea and Mediterranean. That position sustained it as a capital for over eleven centuries.
Factors & digit properties
- Divisors (16)
- 1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 330
- Prime factorisation
- 2 × 3 × 5 × 11
- Digit sum
- 6
- Digital root
- 6
Representations
- Decimal
- 330
- Scientific notation
- 3.300 × 10^2
Roman numerals
C C C X X X
Binary
1 0 1 0 0 1 0 1 0
1 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 330
Octal
5 1 2
5 × 64 + 1 × 8 + 2 × 1 = 330
Hexadecimal
1 4 a
1 × 256 + 4 × 16 + a × 1 = 330
Read as powers of two: 256 + 64 + 8 + 2 = 330.
In historical numeral systems
Egyptian
3 coils of rope, 3 hobbles
3 × 100 + 3 × 10 = 330. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
5 vertical wedges (sixties place), 3 corner wedges (units place)
5 × 60 + 30 = 330. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
tau, then lambda, marked as a numeral
tau-lambda + keraia
tau + lambda written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
shin, then lamed
shin-lamed
shin (300) + lamed (30) = 330, written in descending order.
Maya
3 bars + 1 dot (upper, twenties place) over 2 bars (lower, units place)
16 × 20 + 10 = 330. Places stack vertically with the smallest at the bottom, so the upper group is worth twenty times the lower.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Abundant number
- Pentagonal number
- Harshad (Niven) number
Related numbers & connections
Hagia Sophia was completed in 537 in the city founded as a capital in 330, and its dome was the largest in the world for nearly a millennium.
View 537 →Everyday life
Industrial citric acid is produced by fermenting sugar with Aspergillus niger. The name and the E-number suggest citrus and the manufacturing route has nothing to do with it.
DocumentedEveryday lifeGeography: European Union and United Kingdom
Technology & computing
The A330 and A340 were developed together as twin and quad variants. Improving engine reliability made twins legal over oceans and fuel cost made quads uneconomic, so one sibling outlived the other by well over a decade.
DocumentedTechnology & computing
Geography
Constantinople was founded in 330 at the junction of Europe and Asia and of the Black Sea and Mediterranean. That position sustained it as a capital for over eleven centuries.
DocumentedGeographyGeography: ConstantinoplePeriod: 330
Common questions
Is 330 a prime number?
No, 330 is not prime.
What are the factors of 330?
The factors of 330 are 1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 330.
What is 330 in Roman numerals?
330 in Roman numerals is CCCXXX.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 3 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026