28885630128 has 20 divisors (see below), whose sum is σ = 74621211288. Its totient is φ = 9628543360.

The previous prime is 28885630093. The next prime is 28885630141. The reversal of 28885630128 is 82103658882.

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, 300891933 + ... + 300892028.

Almost surely, 2^28885630128 is an apocalyptic number.

It is an amenable number.

28885630128 is an abundant number, since it is smaller than the sum of its proper divisors (45735581160).

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

28885630128 is a wasteful number, since it uses less digits than its factorization.

28885630128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601783972 (or 601783966 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 51.

The spelling of 28885630128 in words is "twenty-eight billion, eight hundred eighty-five million, six hundred thirty thousand, one hundred twenty-eight".