228 (number)


228 is the natural number following 227 and preceding 229.
228 is a refactorable number,
and a practical number.
There are 228 matchings in a ladder graph with five rungs.
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.
The binary form of 228 contains all the two digit binary numbers in sequence from highest to lowest.