328988388 has 24 divisors (see below), whose sum is σ = 768164992. Its totient is φ = 109587744.

The previous prime is 328988371. The next prime is 328988393. The reversal of 328988388 is 883889823.

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, 10581 + ... + 27747.

Almost surely, 2^328988388 is an apocalyptic number.

It is an amenable number.

328988388 is an abundant number, since it is smaller than the sum of its proper divisors (439176604).

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

328988388 is a wasteful number, since it uses less digits than its factorization.

328988388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18771 (or 18769 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 57.

The square root of 328988388 is about 18138.0370492509. The cubic root of 328988388 is about 690.3354722405.

The spelling of 328988388 in words is "three hundred twenty-eight million, nine hundred eighty-eight thousand, three hundred eighty-eight".