77825028 has 12 divisors (see below), whose sum is σ = 181591760. Its totient is φ = 25941672.

The previous prime is 77825003. The next prime is 77825063. The reversal of 77825028 is 82052877.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3242698 + ... + 3242721.

Almost surely, 2^77825028 is an apocalyptic number.

It is an amenable number.

77825028 is an abundant number, since it is smaller than the sum of its proper divisors (103766732).

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

77825028 is a wasteful number, since it uses less digits than its factorization.

77825028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485426 (or 6485424 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 77825028 is about 8821.8494659567. The cubic root of 77825028 is about 426.9461436645.

The spelling of 77825028 in words is "seventy-seven million, eight hundred twenty-five thousand, twenty-eight".