number.wiki
Number

1,290

1,290 is a composite number, even, a calendar year.

Abundant Number Happy Number Squarefree Year

Properties

Parity
Even
Digit count
4
Digit sum
12
Digital root
3
Palindrome
No
Divisor count
16
σ(n) — sum of divisors
3,168

Primality

Prime factorization: 2 × 3 × 5 × 43

Divisors & multiples

All divisors (16)
1 · 2 · 3 · 5 · 6 · 10 · 15 · 30 · 43 · 86 · 129 · 215 · 258 · 430 · 645 · 1290
Aliquot sum (sum of proper divisors): 1,878
Factor pairs (a × b = 1,290)
1 × 1290
2 × 645
3 × 430
5 × 258
6 × 215
10 × 129
15 × 86
30 × 43
First multiples
1,290 · 2,580 · 3,870 · 5,160 · 6,450 · 7,740 · 9,030 · 10,320 · 11,610 · 12,900

Representations

In words
one thousand two hundred ninety
Ordinal
1290th
Roman numeral
MCCXC
Binary
10100001010
Octal
2412
Hexadecimal
50A

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1290, here are decompositions:

  • 7 + 1283 = 1290
  • 11 + 1279 = 1290
  • 13 + 1277 = 1290
  • 31 + 1259 = 1290
  • 41 + 1249 = 1290
  • 53 + 1237 = 1290
  • 59 + 1231 = 1290
  • 61 + 1229 = 1290

Showing the first eight; more decompositions exist.

Unicode codepoint
Ԋ
U+050A
Uppercase letter (Lu)

UTF-8 encoding: D4 8A (2 bytes).

Lookup U+050A on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#00050A
RGB(0, 5, 10)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.10.

Possible US bank routing number

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

Routing number
000001290
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 000001290 on FedACH ↗ Routing Number Lookup (Wise) ↗