977028240 has 80 divisors (see below), whose sum is σ = 3126514176. Its totient is φ = 252134400.

The previous prime is 977028197. The next prime is 977028281. The reversal of 977028240 is 42820779.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58221 + ... + 73100.

Almost surely, 2^977028240 is an apocalyptic number.

It is an amenable number.

977028240 is an abundant number, since it is smaller than the sum of its proper divisors (2149485936).

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

977028240 is a wasteful number, since it uses less digits than its factorization.

977028240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131368 (or 131362 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 977028240 is about 31257.4509517331. The cubic root of 977028240 is about 992.2833531956.

The spelling of 977028240 in words is "nine hundred seventy-seven million, twenty-eight thousand, two hundred forty".