228161208 has 64 divisors (see below), whose sum is σ = 630835200. Its totient is φ = 68186880.

The previous prime is 228161191. The next prime is 228161221. The reversal of 228161208 is 802161822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13353 + ... + 25191.

It is an arithmetic number, because the mean of its divisors is an integer number (9856800).

Almost surely, 2^228161208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228161208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315417600).

228161208 is an abundant number, since it is smaller than the sum of its proper divisors (402673992).

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

228161208 is a wasteful number, since it uses less digits than its factorization.

228161208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11932 (or 11928 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 228161208 is about 15105.0060575956. The cubic root of 228161208 is about 611.0554226965.

The spelling of 228161208 in words is "two hundred twenty-eight million, one hundred sixty-one thousand, two hundred eight".