28397787024 has 40 divisors (see below), whose sum is σ = 73543944672. Its totient is φ = 9442316800.

The previous prime is 28397786959. The next prime is 28397787091. The reversal of 28397787024 is 42078779382.

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, 718434 + ... + 756929.

Almost surely, 2^28397787024 is an apocalyptic number.

28397787024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28397787024 is an abundant number, since it is smaller than the sum of its proper divisors (45146157648).

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

28397787024 is a wasteful number, since it uses less digits than its factorization.

28397787024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475775 (or 1475769 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 57.

The spelling of 28397787024 in words is "twenty-eight billion, three hundred ninety-seven million, seven hundred eighty-seven thousand, twenty-four".