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13,728

13,728 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
21
Digital root
3
Palindrome
No
Divisor count
48
σ(n) — sum of divisors
42,336

Primality

Prime factorization: 2 5 × 3 × 11 × 13

Divisors & multiples

All divisors (48)
1 · 2 · 3 · 4 · 6 · 8 · 11 · 12 · 13 · 16 · 22 · 24 · 26 · 32 · 33 · 39 · 44 · 48 · 52 · 66 · 78 · 88 · 96 · 104 · 132 · 143 · 156 · 176 · 208 · 264 · 286 · 312 · 352 · 416 · 429 · 528 · 572 · 624 · 858 · 1056 · 1144 · 1248 · 1716 · 2288 · 3432 · 4576 · 6864 · 13728
Aliquot sum (sum of proper divisors): 28,608
Factor pairs (a × b = 13,728)
1 × 13728
2 × 6864
3 × 4576
4 × 3432
6 × 2288
8 × 1716
11 × 1248
12 × 1144
13 × 1056
16 × 858
22 × 624
24 × 572
26 × 528
32 × 429
33 × 416
39 × 352
44 × 312
48 × 286
52 × 264
66 × 208
78 × 176
88 × 156
96 × 143
104 × 132
First multiples
13,728 · 27,456 · 41,184 · 54,912 · 68,640 · 82,368 · 96,096 · 109,824 · 123,552 · 137,280

Representations

In words
thirteen thousand seven hundred twenty-eight
Ordinal
13728th
Binary
11010110100000
Octal
32640
Hexadecimal
35A0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 13728, here are decompositions:

  • 5 + 13723 = 13728
  • 7 + 13721 = 13728
  • 17 + 13711 = 13728
  • 19 + 13709 = 13728
  • 31 + 13697 = 13728
  • 37 + 13691 = 13728
  • 41 + 13687 = 13728
  • 47 + 13681 = 13728

Showing the first eight; more decompositions exist.

Unicode codepoint
U+35A0
Other letter (Lo)

UTF-8 encoding: E3 96 A0 (3 bytes).

Hex color
#0035A0
RGB(0, 53, 160)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.53.160.