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3,960

3,960 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
18
Digital root
9
Palindrome
No
Reversed
693
Divisor count
48
σ(n) — sum of divisors
14,040

Primality

Prime factorization: 2 3 × 3 2 × 5 × 11

Divisors & multiples

All divisors (48)
1 · 2 · 3 · 4 · 5 · 6 · 8 · 9 · 10 · 11 · 12 · 15 · 18 · 20 · 22 · 24 · 30 · 33 · 36 · 40 · 44 · 45 · 55 · 60 · 66 · 72 · 88 · 90 · 99 · 110 · 120 · 132 · 165 · 180 · 198 · 220 · 264 · 330 · 360 · 396 · 440 · 495 · 660 · 792 · 990 · 1320 · 1980 · 3960
Aliquot sum (sum of proper divisors): 10,080
Factor pairs (a × b = 3,960)
1 × 3960
2 × 1980
3 × 1320
4 × 990
5 × 792
6 × 660
8 × 495
9 × 440
10 × 396
11 × 360
12 × 330
15 × 264
18 × 220
20 × 198
22 × 180
24 × 165
30 × 132
33 × 120
36 × 110
40 × 99
44 × 90
45 × 88
55 × 72
60 × 66
First multiples
3,960 · 7,920 · 11,880 · 15,840 · 19,800 · 23,760 · 27,720 · 31,680 · 35,640 · 39,600

Representations

In words
three thousand nine hundred sixty
Ordinal
3960th
Roman numeral
MMMCMLX
Binary
111101111000
Octal
7570
Hexadecimal
0xF78
Base64
D3g=

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 3960, here are decompositions:

  • 13 + 3947 = 3960
  • 17 + 3943 = 3960
  • 29 + 3931 = 3960
  • 31 + 3929 = 3960
  • 37 + 3923 = 3960
  • 41 + 3919 = 3960
  • 43 + 3917 = 3960
  • 53 + 3907 = 3960

Showing the first eight; more decompositions exist.

Unicode codepoint
Tibetan Vowel Sign Vocalic L
U+0F78
Non-spacing mark (Mn)

UTF-8 encoding: E0 BD B8 (3 bytes).

Hex color
#000F78
RGB(0, 15, 120)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.15.120.

Address
0.0.15.120
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.15.120

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