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Number

190

190 is a composite number, even, a calendar year.

Deficient Number Happy Number Harshad / Niven Hexagonal Sphenic Number Squarefree Triangular Year

Properties

Parity
Even
Digit count
3
Digit sum
10
Digital root
1
Palindrome
No
Divisor count
8
σ(n) — sum of divisors
360

Primality

Prime factorization: 2 × 5 × 19

Divisors & multiples

All divisors (8)
1 · 2 · 5 · 10 · 19 · 38 · 95 · 190
Aliquot sum (sum of proper divisors): 170
Factor pairs (a × b = 190)
1 × 190
2 × 95
5 × 38
10 × 19
First multiples
190 · 380 · 570 · 760 · 950 · 1,140 · 1,330 · 1,520 · 1,710 · 1,900

Representations

In words
one hundred ninety
Ordinal
190th
Roman numeral
CXC
Binary
10111110
Octal
276
Hexadecimal
BE

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 190, here are decompositions:

  • 11 + 179 = 190
  • 17 + 173 = 190
  • 23 + 167 = 190
  • 41 + 149 = 190
  • 53 + 137 = 190
  • 59 + 131 = 190
  • 83 + 107 = 190
  • 89 + 101 = 190

Showing the first eight; more decompositions exist.

Unicode codepoint
¾
U+00BE
Other number (No)

UTF-8 encoding: C2 BE (2 bytes).

Lookup U+00BE on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#0000BE
RGB(0, 0, 190)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.190.