28530632886 has 48 divisors (see below), whose sum is σ = 66744241200. Its totient is φ = 8106557760.

The previous prime is 28530632861. The next prime is 28530632899. The reversal of 28530632886 is 68823603582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 214861 + ... + 321288.

It is an arithmetic number, because the mean of its divisors is an integer number (1390505025).

Almost surely, 2^28530632886 is an apocalyptic number.

28530632886 is an abundant number, since it is smaller than the sum of its proper divisors (38213608314).

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

28530632886 is a wasteful number, since it uses less digits than its factorization.

28530632886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536349 (or 536342 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The spelling of 28530632886 in words is "twenty-eight billion, five hundred thirty million, six hundred thirty-two thousand, eight hundred eighty-six".