228 (two hundred [and] twenty-eight) is the natural number following 227 and preceding 229.
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Cardinal | two hundred twenty-eight | |||
Ordinal | 228th (two hundred twenty-eighth) | |||
Factorization | 22 × 3 × 19 | |||
Prime | no | |||
Greek numeral | ΣΚΗ´ | |||
Roman numeral | CCXXVIII | |||
Binary | 111001002 | |||
Ternary | 221103 | |||
Quaternary | 32104 | |||
Quinary | 14035 | |||
Senary | 10206 | |||
Octal | 3448 | |||
Duodecimal | 17012 | |||
Hexadecimal | E416 | |||
Vigesimal | B820 | |||
Base 36 | 6C36 |
228 is a refactorable number[1] and a practical number.[2] There are 228 matchings in a ladder graph with five rungs.[3] 228 is the smallest even number n such that the numerator of the nth Bernoulli number is divisible by a nontrivial square number that is relatively prime to n.[4]
The binary form of 228 contains all the two digit binary numbers in sequence from highest to lowest (11 10 01 00).
Original source: https://en.wikipedia.org/wiki/228 (number).
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