228928656 has 40 divisors (see below), whose sum is σ = 645164064. Its totient is φ = 69372160.

The previous prime is 228928631. The next prime is 228928709. The reversal of 228928656 is 656829822.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216261 + ... + 217316.

Almost surely, 2^228928656 is an apocalyptic number.

It is an amenable number.

228928656 is an abundant number, since it is smaller than the sum of its proper divisors (416235408).

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

228928656 is a wasteful number, since it uses less digits than its factorization.

228928656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433599 (or 433593 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 228928656 is about 15130.3884946818. The cubic root of 228928656 is about 611.7397757360.

The spelling of 228928656 in words is "two hundred twenty-eight million, nine hundred twenty-eight thousand, six hundred fifty-six".