28571979632 has 80 divisors (see below), whose sum is σ = 67627671552. Its totient is φ = 11427018240.

The previous prime is 28571979617. The next prime is 28571979641. The reversal of 28571979632 is 23697917582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29648 + ... + 240879.

Almost surely, 2^28571979632 is an apocalyptic number.

It is an amenable number.

28571979632 is an abundant number, since it is smaller than the sum of its proper divisors (39055691920).

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

28571979632 is a wasteful number, since it uses less digits than its factorization.

28571979632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270606 (or 270600 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 59.

The spelling of 28571979632 in words is "twenty-eight billion, five hundred seventy-one million, nine hundred seventy-nine thousand, six hundred thirty-two".