28578539522 has 16 divisors (see below), whose sum is σ = 46854370752. Its totient is φ = 12993227280.

The previous prime is 28578539519. The next prime is 28578539579. The reversal of 28578539522 is 22593587582.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8201054 + ... + 8204537.

It is an arithmetic number, because the mean of its divisors is an integer number (2928398172).

Almost surely, 2^28578539522 is an apocalyptic number.

28578539522 is a deficient number, since it is larger than the sum of its proper divisors (18275831230).

28578539522 is a wasteful number, since it uses less digits than its factorization.

28578539522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16405673.

The product of its digits is 12096000, while the sum is 56.

The spelling of 28578539522 in words is "twenty-eight billion, five hundred seventy-eight million, five hundred thirty-nine thousand, five hundred twenty-two".