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8,664

8,664 is a composite number, even.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).
Abundant Number Harshad / Niven

Properties

Parity
Even
Digit count
4
Digit sum
24
Digital root
6
Palindrome
No
Divisor count
24
σ(n) — sum of divisors
22,860

Primality

Prime factorization: 2 3 × 3 × 19 2

Divisors & multiples

All divisors (24)
1 · 2 · 3 · 4 · 6 · 8 · 12 · 19 · 24 · 38 · 57 · 76 · 114 · 152 · 228 · 361 · 456 · 722 · 1083 · 1444 · 2166 · 2888 · 4332 · 8664
Aliquot sum (sum of proper divisors): 14,196
Factor pairs (a × b = 8,664)
1 × 8664
2 × 4332
3 × 2888
4 × 2166
6 × 1444
8 × 1083
12 × 722
19 × 456
24 × 361
38 × 228
57 × 152
76 × 114
First multiples
8,664 · 17,328 · 25,992 · 34,656 · 43,320 · 51,984 · 60,648 · 69,312 · 77,976 · 86,640

Representations

In words
eight thousand six hundred sixty-four
Ordinal
8664th
Binary
10000111011000
Octal
20730
Hexadecimal
21D8

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 8664, here are decompositions:

  • 17 + 8647 = 8664
  • 23 + 8641 = 8664
  • 37 + 8627 = 8664
  • 41 + 8623 = 8664
  • 67 + 8597 = 8664
  • 83 + 8581 = 8664
  • 101 + 8563 = 8664
  • 127 + 8537 = 8664

Showing the first eight; more decompositions exist.

Unicode codepoint
U+21D8
Other symbol (So)

UTF-8 encoding: E2 87 98 (3 bytes).

Hex color
#0021D8
RGB(0, 33, 216)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.33.216.