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13,986

13,986 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
5
Digit sum
27
Digital root
9
Palindrome
No
Reversed
68,931
Divisor count
32
σ(n) — sum of divisors
36,480

Primality

Prime factorization: 2 × 3 3 × 7 × 37

Divisors & multiples

All divisors (32)
1 · 2 · 3 · 6 · 7 · 9 · 14 · 18 · 21 · 27 · 37 · 42 · 54 · 63 · 74 · 111 · 126 · 189 · 222 · 259 · 333 · 378 · 518 · 666 · 777 · 999 · 1554 · 1998 · 2331 · 4662 · 6993 · 13986
Aliquot sum (sum of proper divisors): 22,494
Factor pairs (a × b = 13,986)
1 × 13986
2 × 6993
3 × 4662
6 × 2331
7 × 1998
9 × 1554
14 × 999
18 × 777
21 × 666
27 × 518
37 × 378
42 × 333
54 × 259
63 × 222
74 × 189
111 × 126
First multiples
13,986 · 27,972 · 41,958 · 55,944 · 69,930 · 83,916 · 97,902 · 111,888 · 125,874 · 139,860

Representations

In words
thirteen thousand nine hundred eighty-six
Ordinal
13986th
Binary
11011010100010
Octal
33242
Hexadecimal
0x36A2
Base64
NqI=

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 13986, here are decompositions:

  • 19 + 13967 = 13986
  • 23 + 13963 = 13986
  • 53 + 13933 = 13986
  • 73 + 13913 = 13986
  • 79 + 13907 = 13986
  • 83 + 13903 = 13986
  • 103 + 13883 = 13986
  • 107 + 13879 = 13986

Showing the first eight; more decompositions exist.

Unicode codepoint
CJK Unified Ideograph-36A2
U+36A2
Other letter (Lo)

UTF-8 encoding: E3 9A A2 (3 bytes).

Hex color
#0036A2
RGB(0, 54, 162)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.54.162.

Address
0.0.54.162
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.54.162

Unspecified address (0.0.0.0/8) — "this network" placeholder.