Number
73
73 is a prime, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 2
- Digit sum
- 10
- Digital root
- 1
- Palindrome
- No
- Divisor count
- 2
- σ(n) — sum of divisors
- 74
Primality
73 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Aliquot sum (sum of proper divisors):
1
Representations
- In words
- seventy-three
- Ordinal
- 73rd
- Roman numeral
- LXXIII
- Binary
- 1001001
- Octal
- 111
- Hexadecimal
- 49
Also seen as
Prime neighborhood
ASCII character
As an ASCII codepoint, 73 is I. Printable ASCII character I.
Hex color
#000049
RGB(0, 0, 73)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.73.