number.wiki
Number

29

29 is a prime, odd, a calendar year.

Deficient Number Lucas Prime Sexy Prime Squarefree Twin Prime Year

Properties

Parity
Odd
Digit count
2
Digit sum
11
Digital root
2
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
30

Primality

29 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 29
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 29)
1 × 29
First multiples
29 · 58 · 87 · 116 · 145 · 174 · 203 · 232 · 261 · 290

Representations

In words
twenty-nine
Ordinal
29th
Roman numeral
XXIX
Binary
11101
Octal
35
Hexadecimal
1D

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 23 (gap of 6)
  • Next prime: 31 (gap of 2)

Pair status: twin with 31, sexy with 23.

ASCII character

As an ASCII codepoint, 29 is control character (0x1D). ASCII control character.

Hex color
#00001D
RGB(0, 0, 29)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.29.