228161216 has 28 divisors (see below), whose sum is σ = 479392488. Its totient is φ = 107369472.

The previous prime is 228161191. The next prime is 228161221. The reversal of 228161216 is 612161822.

228161216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103766 + ... + 105941.

Almost surely, 2^228161216 is an apocalyptic number.

It is an amenable number.

228161216 is an abundant number, since it is smaller than the sum of its proper divisors (251231272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228161216 is a wasteful number, since it uses less digits than its factorization.

228161216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209736 (or 209726 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 228161216 is about 15105.0063224085. The cubic root of 228161216 is about 611.0554298383.

The spelling of 228161216 in words is "two hundred twenty-eight million, one hundred sixty-one thousand, two hundred sixteen".