264
+264 is the international calling code for Namibia.
- Even
- Composite
Where 264 fits
Why 264 is special
Namibia was administered by South Africa until 1990 and is among the least densely populated countries on Earth, most of it desert.
Factors & digit properties
- Divisors (16)
- 1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 264
- Prime factorisation
- 2^3 × 3 × 11
- Digit sum
- 12
- Digital root
- 3
Representations
- Decimal
- 264
- Scientific notation
- 2.640 × 10^2
Roman numerals
C C L X I V
CCLXIV uses the subtractive pair IV: one before five — five minus one.
Binary
1 0 0 0 0 1 0 0 0
1 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 264
Octal
4 1 0
4 × 64 + 1 × 8 + 0 × 1 = 264
Hexadecimal
1 0 8
1 × 256 + 0 × 16 + 8 × 1 = 264
Read as powers of two: 256 + 8 = 264.
In historical numeral systems
Egyptian
2 coils of rope, 6 hobbles, 4 strokes
2 × 100 + 6 × 10 + 4 × 1 = 264. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
4 vertical wedges (sixties place), 2 corner wedges + 4 vertical wedges (units place)
4 × 60 + 24 = 264. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
sigma, then xi, then delta, marked as a numeral
sigma-xi-delta + keraia
sigma + xi + delta written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
resh, then samekh, then dalet
resh-samekh-dalet
resh (200) + samekh (60) + dalet (4) = 264, written in descending order.
Maya
2 bars + 3 dots (upper, twenties place) over 4 dots (lower, units place)
13 × 20 + 4 = 264. 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
- Harshad (Niven) number
Related numbers & connections
Namibia and Botswana share a border across the Kalahari and are two of the least densely populated countries on Earth.
View 267 →Nearby in a sequence
- is adjacent to267
why?
Strength 0.50, confidence "high".
Geography
+264 reaches Namibia, which became independent from South African administration in 1990 and has one of the lowest population densities of any country.
DocumentedGeographyGeography: Namibia
Common questions
Is 264 a prime number?
No, 264 is not prime.
What are the factors of 264?
The factors of 264 are 1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 264.
What is 264 in Roman numerals?
264 in Roman numerals is CCLXIV. IV is subtractive: one before five — five minus one. Written additively it would be CCLXIIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026