28631374522 has 16 divisors (see below), whose sum is σ = 43152641280. Its totient is φ = 14247199872.

The previous prime is 28631374459. The next prime is 28631374547. The reversal of 28631374522 is 22547313682.

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, 1891978 + ... + 1907050.

It is an arithmetic number, because the mean of its divisors is an integer number (2697040080).

Almost surely, 2^28631374522 is an apocalyptic number.

28631374522 is a deficient number, since it is larger than the sum of its proper divisors (14521266758).

28631374522 is a wasteful number, since it uses less digits than its factorization.

28631374522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19557.

The product of its digits is 483840, while the sum is 43.

The spelling of 28631374522 in words is "twenty-eight billion, six hundred thirty-one million, three hundred seventy-four thousand, five hundred twenty-two".