number.wiki
Number

726

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

Abundant Number Year

Properties

Parity
Even
Digit count
3
Digit sum
15
Digital root
6
Palindrome
No
Divisor count
12
σ(n) — sum of divisors
1,596

Primality

Prime factorization: 2 × 3 × 11 2

Divisors & multiples

All divisors (12)
1 · 2 · 3 · 6 · 11 · 22 · 33 · 66 · 121 · 242 · 363 · 726
Aliquot sum (sum of proper divisors): 870
Factor pairs (a × b = 726)
1 × 726
2 × 363
3 × 242
6 × 121
11 × 66
22 × 33
First multiples
726 · 1,452 · 2,178 · 2,904 · 3,630 · 4,356 · 5,082 · 5,808 · 6,534 · 7,260

Representations

In words
seven hundred twenty-six
Ordinal
726th
Roman numeral
DCCXXVI
Binary
1011010110
Octal
1326
Hexadecimal
2D6

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 726, here are decompositions:

  • 7 + 719 = 726
  • 17 + 709 = 726
  • 43 + 683 = 726
  • 53 + 673 = 726
  • 67 + 659 = 726
  • 73 + 653 = 726
  • 79 + 647 = 726
  • 83 + 643 = 726

Showing the first eight; more decompositions exist.

Unicode codepoint
˖
U+02D6
Modifier symbol (Sk)

UTF-8 encoding: CB 96 (2 bytes).

Hex color
#0002D6
RGB(0, 2, 214)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.214.