number.wiki
Number

672

672 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
24
σ(n) — sum of divisors
2,016

Primality

Prime factorization: 2 5 × 3 × 7

Divisors & multiples

All divisors (24)
1 · 2 · 3 · 4 · 6 · 7 · 8 · 12 · 14 · 16 · 21 · 24 · 28 · 32 · 42 · 48 · 56 · 84 · 96 · 112 · 168 · 224 · 336 · 672
Aliquot sum (sum of proper divisors): 1,344
Factor pairs (a × b = 672)
1 × 672
2 × 336
3 × 224
4 × 168
6 × 112
7 × 96
8 × 84
12 × 56
14 × 48
16 × 42
21 × 32
24 × 28
First multiples
672 · 1,344 · 2,016 · 2,688 · 3,360 · 4,032 · 4,704 · 5,376 · 6,048 · 6,720

Representations

In words
six hundred seventy-two
Ordinal
672nd
Roman numeral
DCLXXII
Binary
1010100000
Octal
1240
Hexadecimal
2A0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 672, here are decompositions:

  • 11 + 661 = 672
  • 13 + 659 = 672
  • 19 + 653 = 672
  • 29 + 643 = 672
  • 31 + 641 = 672
  • 41 + 631 = 672
  • 53 + 619 = 672
  • 59 + 613 = 672

Showing the first eight; more decompositions exist.

Unicode codepoint
ʠ
U+02A0
Lowercase letter (Ll)

UTF-8 encoding: CA A0 (2 bytes).

Lookup U+02A0 on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#0002A0
RGB(0, 2, 160)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.160.