28508632886 has 8 divisors (see below), whose sum is σ = 42872880960. Its totient is φ = 14217672568.

The previous prime is 28508632883. The next prime is 28508632939. The reversal of 28508632886 is 68823680582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28508632883) 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, 18320966 + ... + 18322521.

It is an arithmetic number, because the mean of its divisors is an integer number (5359110120).

Almost surely, 2^28508632886 is an apocalyptic number.

28508632886 is a deficient number, since it is larger than the sum of its proper divisors (14364248074).

28508632886 is a wasteful number, since it uses less digits than its factorization.

28508632886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36643878.

The product of its (nonzero) digits is 8847360, while the sum is 56.

The spelling of 28508632886 in words is "twenty-eight billion, five hundred eight million, six hundred thirty-two thousand, eight hundred eighty-six".