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Number

264

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

Abundant Number Harshad / Niven Year

Properties

Parity
Even
Digit count
3
Digit sum
12
Digital root
3
Palindrome
No
Divisor count
16
σ(n) — sum of divisors
720

Primality

Prime factorization: 2 3 × 3 × 11

Divisors & multiples

All divisors (16)
1 · 2 · 3 · 4 · 6 · 8 · 11 · 12 · 22 · 24 · 33 · 44 · 66 · 88 · 132 · 264
Aliquot sum (sum of proper divisors): 456
Factor pairs (a × b = 264)
1 × 264
2 × 132
3 × 88
4 × 66
6 × 44
8 × 33
11 × 24
12 × 22
First multiples
264 · 528 · 792 · 1,056 · 1,320 · 1,584 · 1,848 · 2,112 · 2,376 · 2,640

Representations

In words
two hundred sixty-four
Ordinal
264th
Roman numeral
CCLXIV
Binary
100001000
Octal
410
Hexadecimal
108

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 264, here are decompositions:

  • 7 + 257 = 264
  • 13 + 251 = 264
  • 23 + 241 = 264
  • 31 + 233 = 264
  • 37 + 227 = 264
  • 41 + 223 = 264
  • 53 + 211 = 264
  • 67 + 197 = 264

Showing the first eight; more decompositions exist.

Unicode codepoint
Ĉ
U+0108
Uppercase letter (Lu)

UTF-8 encoding: C4 88 (2 bytes).

Lookup U+0108 on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#000108
RGB(0, 1, 8)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.8.