328979840 has 64 divisors (see below), whose sum is σ = 898832160. Its totient is φ = 112791552.

The previous prime is 328979831. The next prime is 328979897. The reversal of 328979840 is 48979823.

It is a happy number.

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

It is a congruent number.

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, 32237 + ... + 41196.

Almost surely, 2^328979840 is an apocalyptic number.

It is an amenable number.

328979840 is an abundant number, since it is smaller than the sum of its proper divisors (569852320).

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

328979840 is an equidigital number, since it uses as much as digits as its factorization.

328979840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73459 (or 73447 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 328979840 is about 18137.8014103143. The cubic root of 328979840 is about 690.3294932668.

The spelling of 328979840 in words is "three hundred twenty-eight million, nine hundred seventy-nine thousand, eight hundred forty".