328428527940 has 72 divisors (see below), whose sum is σ = 1017429678720. Its totient is φ = 85717514304.

The previous prime is 328428527891. The next prime is 328428527951. The reversal of 328428527940 is 49725824823.

328428527940 is a `hidden beast` number, since 3 + 2 + 8 + 4 + 28 + 527 + 94 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19402210 + ... + 19419129.

It is an arithmetic number, because the mean of its divisors is an integer number (14130967760).

Almost surely, 2^328428527940 is an apocalyptic number.

328428527940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328428527940 is an abundant number, since it is smaller than the sum of its proper divisors (689001150780).

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

328428527940 is a wasteful number, since it uses less digits than its factorization.

328428527940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38821401 (or 38821396 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 328428527940 in words is "three hundred twenty-eight billion, four hundred twenty-eight million, five hundred twenty-seven thousand, nine hundred forty".