28508874768 has 60 divisors (see below), whose sum is σ = 87038463408. Its totient is φ = 8639052480.

The previous prime is 28508874721. The next prime is 28508874791. The reversal of 28508874768 is 86747880582.

28508874768 is a `hidden beast` number, since 2 + 8 + 508 + 87 + 47 + 6 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8997430 + ... + 9000597.

Almost surely, 2^28508874768 is an apocalyptic number.

It is an amenable number.

28508874768 is an abundant number, since it is smaller than the sum of its proper divisors (58529588640).

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

28508874768 is a wasteful number, since it uses less digits than its factorization.

28508874768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17998052 (or 17998043 counting only the distinct ones).

The product of its (nonzero) digits is 48168960, while the sum is 63.

The spelling of 28508874768 in words is "twenty-eight billion, five hundred eight million, eight hundred seventy-four thousand, seven hundred sixty-eight".