977448428 has 24 divisors (see below), whose sum is σ = 1866884880. Its totient is φ = 444093120.

The previous prime is 977448413. The next prime is 977448529. The reversal of 977448428 is 824844779.

It is a self number, because there is not a number n which added to its sum of digits gives 977448428.

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, 139718 + ... + 146546.

It is an arithmetic number, because the mean of its divisors is an integer number (77786870).

Almost surely, 2^977448428 is an apocalyptic number.

It is an amenable number.

977448428 is a deficient number, since it is larger than the sum of its proper divisors (889436452).

977448428 is a wasteful number, since it uses less digits than its factorization.

977448428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10097 (or 10095 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 53.

The square root of 977448428 is about 31264.1716346363. The cubic root of 977448428 is about 992.4255823838.

The spelling of 977448428 in words is "nine hundred seventy-seven million, four hundred forty-eight thousand, four hundred twenty-eight".