28974239808 has 28 divisors (see below), whose sum is σ = 76661010000. Its totient is φ = 9658079872.

The previous prime is 28974239803. The next prime is 28974239809. The reversal of 28974239808 is 80893247982.

It is not an unprimeable number, because it can be changed into a prime (28974239803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75453558 + ... + 75453941.

Almost surely, 2^28974239808 is an apocalyptic number.

It is an amenable number.

28974239808 is an abundant number, since it is smaller than the sum of its proper divisors (47686770192).

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

28974239808 is a wasteful number, since it uses less digits than its factorization.

28974239808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150907514 (or 150907504 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 28974239808 in words is "twenty-eight billion, nine hundred seventy-four million, two hundred thirty-nine thousand, eight hundred eight".