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87,672

87,672 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

Properties

Parity
Even
Digit count
5
Digit sum
30
Digital root
3
Palindrome
No
Divisor count
32
σ(n) — sum of divisors
236,880

Primality

Prime factorization: 2 3 × 3 × 13 × 281

Divisors & multiples

All divisors (32)
1 · 2 · 3 · 4 · 6 · 8 · 12 · 13 · 24 · 26 · 39 · 52 · 78 · 104 · 156 · 281 · 312 · 562 · 843 · 1124 · 1686 · 2248 · 3372 · 3653 · 6744 · 7306 · 10959 · 14612 · 21918 · 29224 · 43836 · 87672
Aliquot sum (sum of proper divisors): 149,208
Factor pairs (a × b = 87,672)
1 × 87672
2 × 43836
3 × 29224
4 × 21918
6 × 14612
8 × 10959
12 × 7306
13 × 6744
24 × 3653
26 × 3372
39 × 2248
52 × 1686
78 × 1124
104 × 843
156 × 562
281 × 312
First multiples
87,672 · 175,344 · 263,016 · 350,688 · 438,360 · 526,032 · 613,704 · 701,376 · 789,048 · 876,720

Representations

In words
eighty-seven thousand six hundred seventy-two
Ordinal
87672nd
Binary
10101011001111000
Octal
253170
Hexadecimal
15678

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 87672, here are decompositions:

  • 23 + 87649 = 87672
  • 29 + 87643 = 87672
  • 31 + 87641 = 87672
  • 41 + 87631 = 87672
  • 43 + 87629 = 87672
  • 59 + 87613 = 87672
  • 83 + 87589 = 87672
  • 89 + 87583 = 87672

Showing the first eight; more decompositions exist.

Hex color
#015678
RGB(1, 86, 120)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.86.120.