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4,720

4,720 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 Octagonal

Properties

Parity
Even
Digit count
4
Digit sum
13
Digital root
4
Palindrome
No
Divisor count
20
σ(n) — sum of divisors
11,160

Primality

Prime factorization: 2 4 × 5 × 59

Divisors & multiples

All divisors (20)
1 · 2 · 4 · 5 · 8 · 10 · 16 · 20 · 40 · 59 · 80 · 118 · 236 · 295 · 472 · 590 · 944 · 1180 · 2360 · 4720
Aliquot sum (sum of proper divisors): 6,440
Factor pairs (a × b = 4,720)
1 × 4720
2 × 2360
4 × 1180
5 × 944
8 × 590
10 × 472
16 × 295
20 × 236
40 × 118
59 × 80
First multiples
4,720 · 9,440 · 14,160 · 18,880 · 23,600 · 28,320 · 33,040 · 37,760 · 42,480 · 47,200

Representations

In words
four thousand seven hundred twenty
Ordinal
4720th
Binary
1001001110000
Octal
11160
Hexadecimal
1270

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 4720, here are decompositions:

  • 17 + 4703 = 4720
  • 29 + 4691 = 4720
  • 41 + 4679 = 4720
  • 47 + 4673 = 4720
  • 71 + 4649 = 4720
  • 83 + 4637 = 4720
  • 137 + 4583 = 4720
  • 173 + 4547 = 4720

Showing the first eight; more decompositions exist.

Unicode codepoint
U+1270
Other letter (Lo)

UTF-8 encoding: E1 89 B0 (3 bytes).

Hex color
#001270
RGB(0, 18, 112)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.18.112.