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Number

1,216

1,216 is a composite number, even, a calendar year.

Abundant Number Year

Properties

Parity
Even
Digit count
4
Digit sum
10
Digital root
1
Palindrome
No
Divisor count
14
σ(n) — sum of divisors
2,540

Primality

Prime factorization: 2 6 × 19

Divisors & multiples

All divisors (14)
1 · 2 · 4 · 8 · 16 · 19 · 32 · 38 · 64 · 76 · 152 · 304 · 608 · 1216
Aliquot sum (sum of proper divisors): 1,324
Factor pairs (a × b = 1,216)
1 × 1216
2 × 608
4 × 304
8 × 152
16 × 76
19 × 64
32 × 38
First multiples
1,216 · 2,432 · 3,648 · 4,864 · 6,080 · 7,296 · 8,512 · 9,728 · 10,944 · 12,160

Representations

In words
one thousand two hundred sixteen
Ordinal
1216th
Roman numeral
MCCXVI
Binary
10011000000
Octal
2300
Hexadecimal
4C0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1216, here are decompositions:

  • 3 + 1213 = 1216
  • 23 + 1193 = 1216
  • 29 + 1187 = 1216
  • 53 + 1163 = 1216
  • 107 + 1109 = 1216
  • 113 + 1103 = 1216
  • 167 + 1049 = 1216
  • 197 + 1019 = 1216

Showing the first eight; more decompositions exist.

Unicode codepoint
Ӏ
U+04C0
Uppercase letter (Lu)

UTF-8 encoding: D3 80 (2 bytes).

Lookup U+04C0 on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#0004C0
RGB(0, 4, 192)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.192.

Possible US bank routing number

This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.

Routing number
000001216
Federal Reserve
United States Government

Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.

Look up 000001216 on FedACH ↗ Routing Number Lookup (Wise) ↗