328531884 has 12 divisors (see below), whose sum is σ = 766574424. Its totient is φ = 109510624.

The previous prime is 328531829. The next prime is 328531897. The reversal of 328531884 is 488135823.

It is a tau number, because it is divible by the number of its divisors (12).

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, 13688817 + ... + 13688840.

It is an arithmetic number, because the mean of its divisors is an integer number (63881202).

Almost surely, 2^328531884 is an apocalyptic number.

It is an amenable number.

328531884 is an abundant number, since it is smaller than the sum of its proper divisors (438042540).

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

328531884 is a wasteful number, since it uses less digits than its factorization.

328531884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27377664 (or 27377662 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 328531884 is about 18125.4485185884. The cubic root of 328531884 is about 690.0160214721.

The spelling of 328531884 in words is "three hundred twenty-eight million, five hundred thirty-one thousand, eight hundred eighty-four".