977788928 has 28 divisors (see below), whose sum is σ = 1955474880. Its totient is φ = 488890368.

The previous prime is 977788901. The next prime is 977788939. The reversal of 977788928 is 829887779.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51488 + ... + 67871.

Almost surely, 2^977788928 is an apocalyptic number.

It is an amenable number.

977788928 is a deficient number, since it is larger than the sum of its proper divisors (977685952).

977788928 is an equidigital number, since it uses as much as digits as its factorization.

977788928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119385 (or 119361 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 65.

The square root of 977788928 is about 31269.6166909670. The cubic root of 977788928 is about 992.5408081320.

The spelling of 977788928 in words is "nine hundred seventy-seven million, seven hundred eighty-eight thousand, nine hundred twenty-eight".