number.wiki
Number

768

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

Abundant Number Year

Properties

Parity
Even
Digit count
3
Digit sum
21
Digital root
3
Palindrome
No
Divisor count
18
σ(n) — sum of divisors
2,044

Primality

Prime factorization: 2 8 × 3

Divisors & multiples

All divisors (18)
1 · 2 · 3 · 4 · 6 · 8 · 12 · 16 · 24 · 32 · 48 · 64 · 96 · 128 · 192 · 256 · 384 · 768
Aliquot sum (sum of proper divisors): 1,276
Factor pairs (a × b = 768)
1 × 768
2 × 384
3 × 256
4 × 192
6 × 128
8 × 96
12 × 64
16 × 48
24 × 32
First multiples
768 · 1,536 · 2,304 · 3,072 · 3,840 · 4,608 · 5,376 · 6,144 · 6,912 · 7,680

Representations

In words
seven hundred sixty-eight
Ordinal
768th
Roman numeral
DCCLXVIII
Binary
1100000000
Octal
1400
Hexadecimal
300

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 768, here are decompositions:

  • 7 + 761 = 768
  • 11 + 757 = 768
  • 17 + 751 = 768
  • 29 + 739 = 768
  • 41 + 727 = 768
  • 59 + 709 = 768
  • 67 + 701 = 768
  • 107 + 661 = 768

Showing the first eight; more decompositions exist.

Unicode codepoint
̀
U+0300
Non-spacing mark (Mn)

UTF-8 encoding: CC 80 (2 bytes).

Lookup U+0300 on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#000300
RGB(0, 3, 0)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.0.