328072320 has 96 divisors (see below), whose sum is σ = 1132894620. Its totient is φ = 87484416.

The previous prime is 328072319. The next prime is 328072337. The reversal of 328072320 is 23270823.

It can be written as a sum of positive squares in 2 ways, for example, as 299428416 + 28643904 = 17304^2 + 5352^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22719 + ... + 34238.

Almost surely, 2^328072320 is an apocalyptic number.

328072320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328072320 is an abundant number, since it is smaller than the sum of its proper divisors (804822300).

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

328072320 is a wasteful number, since it uses less digits than its factorization.

328072320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56982 (or 56967 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 328072320 is about 18112.7667682218. The cubic root of 328072320 is about 689.6941303418.

The spelling of 328072320 in words is "three hundred twenty-eight million, seventy-two thousand, three hundred twenty".