number.wiki
Number

1,090

1,090 is a composite number, even, a calendar year.

Deficient Number Happy Number Harshad / Niven Sphenic Number Squarefree Year

Properties

Parity
Even
Digit count
4
Digit sum
10
Digital root
1
Palindrome
No
Divisor count
8
σ(n) — sum of divisors
1,980

Primality

Prime factorization: 2 × 5 × 109

Divisors & multiples

All divisors (8)
1 · 2 · 5 · 10 · 109 · 218 · 545 · 1090
Aliquot sum (sum of proper divisors): 890
Factor pairs (a × b = 1,090)
1 × 1090
2 × 545
5 × 218
10 × 109
First multiples
1,090 · 2,180 · 3,270 · 4,360 · 5,450 · 6,540 · 7,630 · 8,720 · 9,810 · 10,900

Representations

In words
one thousand ninety
Ordinal
1090th
Roman numeral
MXC
Binary
10001000010
Octal
2102
Hexadecimal
442

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1090, here are decompositions:

  • 3 + 1087 = 1090
  • 29 + 1061 = 1090
  • 41 + 1049 = 1090
  • 59 + 1031 = 1090
  • 71 + 1019 = 1090
  • 107 + 983 = 1090
  • 113 + 977 = 1090
  • 137 + 953 = 1090

Showing the first eight; more decompositions exist.

Unicode codepoint
т
U+0442
Lowercase letter (Ll)

UTF-8 encoding: D1 82 (2 bytes).

Lookup U+0442 on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#000442
RGB(0, 4, 66)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.66.