number.wiki
Number

1,516

1,516 is a composite number, even, a calendar year.

Deficient Number Year

Properties

Parity
Even
Digit count
4
Digit sum
13
Digital root
4
Palindrome
No
Divisor count
6
σ(n) — sum of divisors
2,660

Primality

Prime factorization: 2 2 × 379

Divisors & multiples

All divisors (6)
1 · 2 · 4 · 379 · 758 · 1516
Aliquot sum (sum of proper divisors): 1,144
Factor pairs (a × b = 1,516)
1 × 1516
2 × 758
4 × 379
First multiples
1,516 · 3,032 · 4,548 · 6,064 · 7,580 · 9,096 · 10,612 · 12,128 · 13,644 · 15,160

Representations

In words
one thousand five hundred sixteen
Ordinal
1516th
Roman numeral
MDXVI
Binary
10111101100
Octal
2754
Hexadecimal
5EC

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1516, here are decompositions:

  • 5 + 1511 = 1516
  • 17 + 1499 = 1516
  • 23 + 1493 = 1516
  • 29 + 1487 = 1516
  • 83 + 1433 = 1516
  • 89 + 1427 = 1516
  • 107 + 1409 = 1516
  • 149 + 1367 = 1516

Showing the first eight; more decompositions exist.

Hex color
#0005EC
RGB(0, 5, 236)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.236.