21,364
21,364 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 16
- Digital root
- 7
- Palindrome
- No
- Reversed
- 46,312
- Divisor count
- 18
- σ(n) — sum of divisors
- 43,890
Primality
Prime factorization: 2 2 × 7 2 × 109
Divisors & multiples
Representations
- In words
- twenty-one thousand three hundred sixty-four
- Ordinal
- 21364th
- Binary
- 101001101110100
- Octal
- 51564
- Hexadecimal
- 0x5374
- Base64
- U3Q=
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 21364, here are decompositions:
- 17 + 21347 = 21364
- 23 + 21341 = 21364
- 41 + 21323 = 21364
- 47 + 21317 = 21364
- 137 + 21227 = 21364
- 173 + 21191 = 21364
- 257 + 21107 = 21364
- 263 + 21101 = 21364
Showing the first eight; more decompositions exist.
UTF-8 encoding: E5 8D B4 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.83.116.
- Address
- 0.0.83.116
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.83.116
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.