977332428 has 36 divisors (see below), whose sum is σ = 2478451248. Its totient is φ = 324726240.

The previous prime is 977332403. The next prime is 977332439. The reversal of 977332428 is 824233779.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32451 + ... + 54842.

It is an arithmetic number, because the mean of its divisors is an integer number (68845868).

Almost surely, 2^977332428 is an apocalyptic number.

It is an amenable number.

977332428 is an abundant number, since it is smaller than the sum of its proper divisors (1501118820).

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

977332428 is a wasteful number, since it uses less digits than its factorization.

977332428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87614 (or 87609 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 977332428 is about 31262.3164208924. The cubic root of 977332428 is about 992.3863216860.

The spelling of 977332428 in words is "nine hundred seventy-seven million, three hundred thirty-two thousand, four hundred twenty-eight".