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Number

240

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

Abundant Number Harshad / Niven Pronic / Oblong Year

Properties

Parity
Even
Digit count
3
Digit sum
6
Digital root
6
Palindrome
No
Divisor count
20
σ(n) — sum of divisors
744

Primality

Prime factorization: 2 4 × 3 × 5

Divisors & multiples

All divisors (20)
1 · 2 · 3 · 4 · 5 · 6 · 8 · 10 · 12 · 15 · 16 · 20 · 24 · 30 · 40 · 48 · 60 · 80 · 120 · 240
Aliquot sum (sum of proper divisors): 504
Factor pairs (a × b = 240)
1 × 240
2 × 120
3 × 80
4 × 60
5 × 48
6 × 40
8 × 30
10 × 24
12 × 20
15 × 16
First multiples
240 · 480 · 720 · 960 · 1,200 · 1,440 · 1,680 · 1,920 · 2,160 · 2,400

Representations

In words
two hundred forty
Ordinal
240th
Roman numeral
CCXL
Binary
11110000
Octal
360
Hexadecimal
F0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 240, here are decompositions:

  • 7 + 233 = 240
  • 11 + 229 = 240
  • 13 + 227 = 240
  • 17 + 223 = 240
  • 29 + 211 = 240
  • 41 + 199 = 240
  • 43 + 197 = 240
  • 47 + 193 = 240

Showing the first eight; more decompositions exist.

Unicode codepoint
ð
U+00F0
Lowercase letter (Ll)

UTF-8 encoding: C3 B0 (2 bytes).

Lookup U+00F0 on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#0000F0
RGB(0, 0, 240)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.240.