Number
398
398 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 20
- Digital root
- 2
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 600
Primality
Prime factorization: 2 × 199
Divisors & multiples
Aliquot sum (sum of proper divisors):
202
Representations
- In words
- three hundred ninety-eight
- Ordinal
- 398th
- Roman numeral
- CCCXCVIII
- Binary
- 110001110
- Octal
- 616
- Hexadecimal
- 18E
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 398, here are decompositions:
- 19 + 379 = 398
- 31 + 367 = 398
- 61 + 337 = 398
- 67 + 331 = 398
- 127 + 271 = 398
- 157 + 241 = 398
- 199 + 199 = 398
Unicode codepoint
Ǝ
U+018E
Uppercase letter (Lu)
UTF-8 encoding: C6 8E (2 bytes).
Hex color
#00018E
RGB(0, 1, 142)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.142.
Possible US bank routing number
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Routing number
000000398
Federal Reserve
United States Government
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.