28972642008 has 64 divisors (see below), whose sum is σ = 73347805440. Its totient is φ = 9535526784.

The previous prime is 28972641989. The next prime is 28972642021. The reversal of 28972642008 is 80024627982.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4564485 + ... + 4570827.

It is an arithmetic number, because the mean of its divisors is an integer number (1146059460).

Almost surely, 2^28972642008 is an apocalyptic number.

It is an amenable number.

28972642008 is an abundant number, since it is smaller than the sum of its proper divisors (44375163432).

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

28972642008 is a wasteful number, since it uses less digits than its factorization.

28972642008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8728 (or 8724 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 28972642008 in words is "twenty-eight billion, nine hundred seventy-two million, six hundred forty-two thousand, eight".