number.wiki
Number

450

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

Abundant Number Harshad / Niven Year

Properties

Parity
Even
Digit count
3
Digit sum
9
Digital root
9
Palindrome
No
Divisor count
18
σ(n) — sum of divisors
1,209

Primality

Prime factorization: 2 × 3 2 × 5 2

Divisors & multiples

All divisors (18)
1 · 2 · 3 · 5 · 6 · 9 · 10 · 15 · 18 · 25 · 30 · 45 · 50 · 75 · 90 · 150 · 225 · 450
Aliquot sum (sum of proper divisors): 759
Factor pairs (a × b = 450)
1 × 450
2 × 225
3 × 150
5 × 90
6 × 75
9 × 50
10 × 45
15 × 30
18 × 25
First multiples
450 · 900 · 1,350 · 1,800 · 2,250 · 2,700 · 3,150 · 3,600 · 4,050 · 4,500

Representations

In words
four hundred fifty
Ordinal
450th
Roman numeral
CDL
Binary
111000010
Octal
702
Hexadecimal
1C2

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 450, here are decompositions:

  • 7 + 443 = 450
  • 11 + 439 = 450
  • 17 + 433 = 450
  • 19 + 431 = 450
  • 29 + 421 = 450
  • 31 + 419 = 450
  • 41 + 409 = 450
  • 53 + 397 = 450

Showing the first eight; more decompositions exist.

Unicode codepoint
ǂ
U+01C2
Other letter (Lo)

UTF-8 encoding: C7 82 (2 bytes).

Lookup U+01C2 on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#0001C2
RGB(0, 1, 194)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.194.