number.wiki
Number

808

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

Deficient Number Palindrome Strobogrammatic Year

Properties

Parity
Even
Digit count
3
Digit sum
16
Digital root
7
Palindrome
Yes
Divisor count
8
σ(n) — sum of divisors
1,530

Primality

Prime factorization: 2 3 × 101

Divisors & multiples

All divisors (8)
1 · 2 · 4 · 8 · 101 · 202 · 404 · 808
Aliquot sum (sum of proper divisors): 722
Factor pairs (a × b = 808)
1 × 808
2 × 404
4 × 202
8 × 101
First multiples
808 · 1,616 · 2,424 · 3,232 · 4,040 · 4,848 · 5,656 · 6,464 · 7,272 · 8,080

Representations

In words
eight hundred eight
Ordinal
808th
Roman numeral
DCCCVIII
Binary
1100101000
Octal
1450
Hexadecimal
328

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 808, here are decompositions:

  • 11 + 797 = 808
  • 47 + 761 = 808
  • 89 + 719 = 808
  • 107 + 701 = 808
  • 131 + 677 = 808
  • 149 + 659 = 808
  • 167 + 641 = 808
  • 191 + 617 = 808

Showing the first eight; more decompositions exist.

Unicode codepoint
̨
U+0328
Non-spacing mark (Mn)

UTF-8 encoding: CC A8 (2 bytes).

Hex color
#000328
RGB(0, 3, 40)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.40.