number.wiki
Number

564

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

Abundant Number Year

Properties

Parity
Even
Digit count
3
Digit sum
15
Digital root
6
Palindrome
No
Divisor count
12
σ(n) — sum of divisors
1,344

Primality

Prime factorization: 2 2 × 3 × 47

Divisors & multiples

All divisors (12)
1 · 2 · 3 · 4 · 6 · 12 · 47 · 94 · 141 · 188 · 282 · 564
Aliquot sum (sum of proper divisors): 780
Factor pairs (a × b = 564)
1 × 564
2 × 282
3 × 188
4 × 141
6 × 94
12 × 47
First multiples
564 · 1,128 · 1,692 · 2,256 · 2,820 · 3,384 · 3,948 · 4,512 · 5,076 · 5,640

Representations

In words
five hundred sixty-four
Ordinal
564th
Roman numeral
DLXIV
Binary
1000110100
Octal
1064
Hexadecimal
234

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 564, here are decompositions:

  • 7 + 557 = 564
  • 17 + 547 = 564
  • 23 + 541 = 564
  • 41 + 523 = 564
  • 43 + 521 = 564
  • 61 + 503 = 564
  • 73 + 491 = 564
  • 97 + 467 = 564

Showing the first eight; more decompositions exist.

Unicode codepoint
ȴ
U+0234
Lowercase letter (Ll)

UTF-8 encoding: C8 B4 (2 bytes).

Lookup U+0234 on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#000234
RGB(0, 2, 52)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.52.