528
528 is the ISO 3166-1 numeric country code for Netherlands.
- Even
- Composite
Where 528 fits
Why 528 is special
The Netherlands is one of several countries whose common English name and official name differ, which is exactly the ambiguity a numeric code removes.
528 is part of
Factors & digit properties
- Divisors (20)
- 1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 132, 176, 264, 528
- Prime factorisation
- 2^4 × 3 × 11
- Digit sum
- 15
- Digital root
- 6
Representations
- Decimal
- 528
- Scientific notation
- 5.280 × 10^2
Roman numerals
D X X V I I I
Binary
1 0 0 0 0 1 0 0 0 0
1 × 512 + 0 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 1 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 528
Octal
1 0 2 0
1 × 512 + 0 × 64 + 2 × 8 + 0 × 1 = 528
Hexadecimal
2 1 0
2 × 256 + 1 × 16 + 0 × 1 = 528
Read as powers of two: 512 + 16 = 528.
In historical numeral systems
Egyptian
5 coils of rope, 2 hobbles, 8 strokes
5 × 100 + 2 × 10 + 8 × 1 = 528. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
8 vertical wedges (sixties place), 4 corner wedges + 8 vertical wedges (units place)
8 × 60 + 48 = 528. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
phi, then kappa, then eta, marked as a numeral
phi-kappa-eta + keraia
phi + kappa + eta written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
tav, then qof, then kaf, then het
tav-qof-kaf-het
tav (400) + qof (100) + kaf (20) + het (8) = 528, written in descending order.
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
- Triangular number
- Abundant number
Related numbers & connections
The Netherlands' ISO numeric code and calling code. A country whose common and official names differ is exactly the case numeric identifiers exist for.
View 31 →Other connections
- is associated with31
why?
Strength 0.50, confidence "high".
Geography
528 is the Netherlands' ISO numeric code. Countries whose names vary between usage and officialdom are the clearest argument for identifying states by number.
DocumentedGeographyGeography: Netherlands
Common questions
Is 528 a prime number?
No, 528 is not prime.
What are the factors of 528?
The factors of 528 are 1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 132, 176, 264, 528.
What is 528 in Roman numerals?
528 in Roman numerals is DXXVIII.
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