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Number

528

528 is a composite number, even, a calendar year.

Abundant Number Triangular Year

Properties

Parity
Even
Digit count
3
Digit sum
15
Digital root
6
Palindrome
No
Divisor count
20
σ(n) — sum of divisors
1,488

Primality

Prime factorization: 2 4 × 3 × 11

Divisors & multiples

All divisors (20)
1 · 2 · 3 · 4 · 6 · 8 · 11 · 12 · 16 · 22 · 24 · 33 · 44 · 48 · 66 · 88 · 132 · 176 · 264 · 528
Aliquot sum (sum of proper divisors): 960
Factor pairs (a × b = 528)
1 × 528
2 × 264
3 × 176
4 × 132
6 × 88
8 × 66
11 × 48
12 × 44
16 × 33
22 × 24
First multiples
528 · 1,056 · 1,584 · 2,112 · 2,640 · 3,168 · 3,696 · 4,224 · 4,752 · 5,280

Representations

In words
five hundred twenty-eight
Ordinal
528th
Roman numeral
DXXVIII
Binary
1000010000
Octal
1020
Hexadecimal
210

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 528, here are decompositions:

  • 5 + 523 = 528
  • 7 + 521 = 528
  • 19 + 509 = 528
  • 29 + 499 = 528
  • 37 + 491 = 528
  • 41 + 487 = 528
  • 61 + 467 = 528
  • 67 + 461 = 528

Showing the first eight; more decompositions exist.

Unicode codepoint
Ȑ
U+0210
Uppercase letter (Lu)

UTF-8 encoding: C8 90 (2 bytes).

Lookup U+0210 on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#000210
RGB(0, 2, 16)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.16.