328402560 has 64 divisors (see below), whose sum is σ = 1046789280. Its totient is φ = 87573504.

The previous prime is 328402553. The next prime is 328402597. The reversal of 328402560 is 65204823.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 83602 + ... + 87441.

Almost surely, 2^328402560 is an apocalyptic number.

328402560 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328402560 is an abundant number, since it is smaller than the sum of its proper divisors (718386720).

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

328402560 is a wasteful number, since it uses less digits than its factorization.

328402560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171065 (or 171053 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 328402560 is about 18121.8806971021. The cubic root of 328402560 is about 689.9254697907.

The spelling of 328402560 in words is "three hundred twenty-eight million, four hundred two thousand, five hundred sixty".