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13,824

13,824 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 Happy Number Harshad / Niven Perfect Cube Powerful Number

Properties

Parity
Even
Digit count
5
Digit sum
18
Digital root
9
Palindrome
No
Divisor count
40
σ(n) — sum of divisors
40,920

Primality

Prime factorization: 2 9 × 3 3

Divisors & multiples

All divisors (40)
1 · 2 · 3 · 4 · 6 · 8 · 9 · 12 · 16 · 18 · 24 · 27 · 32 · 36 · 48 · 54 · 64 · 72 · 96 · 108 · 128 · 144 · 192 · 216 · 256 · 288 · 384 · 432 · 512 · 576 · 768 · 864 · 1152 · 1536 · 1728 · 2304 · 3456 · 4608 · 6912 · 13824
Aliquot sum (sum of proper divisors): 27,096
Factor pairs (a × b = 13,824)
1 × 13824
2 × 6912
3 × 4608
4 × 3456
6 × 2304
8 × 1728
9 × 1536
12 × 1152
16 × 864
18 × 768
24 × 576
27 × 512
32 × 432
36 × 384
48 × 288
54 × 256
64 × 216
72 × 192
96 × 144
108 × 128
First multiples
13,824 · 27,648 · 41,472 · 55,296 · 69,120 · 82,944 · 96,768 · 110,592 · 124,416 · 138,240

Representations

In words
thirteen thousand eight hundred twenty-four
Ordinal
13824th
Binary
11011000000000
Octal
33000
Hexadecimal
3600

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 13824, here are decompositions:

  • 17 + 13807 = 13824
  • 43 + 13781 = 13824
  • 61 + 13763 = 13824
  • 67 + 13757 = 13824
  • 73 + 13751 = 13824
  • 101 + 13723 = 13824
  • 103 + 13721 = 13824
  • 113 + 13711 = 13824

Showing the first eight; more decompositions exist.

Unicode codepoint
U+3600
Other letter (Lo)

UTF-8 encoding: E3 98 80 (3 bytes).

Hex color
#003600
RGB(0, 54, 0)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.54.0.