28871604764 has 24 divisors (see below), whose sum is σ = 53513979120. Its totient is φ = 13582423296.

The previous prime is 28871604757. The next prime is 28871604799. The reversal of 28871604764 is 46740617882.

It is a congruent number.

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, 160682 + ... + 289070.

It is an arithmetic number, because the mean of its divisors is an integer number (2229749130).

Almost surely, 2^28871604764 is an apocalyptic number.

It is an amenable number.

28871604764 is a deficient number, since it is larger than the sum of its proper divisors (24642374356).

28871604764 is a wasteful number, since it uses less digits than its factorization.

28871604764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131717 (or 131715 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 53.

The spelling of 28871604764 in words is "twenty-eight billion, eight hundred seventy-one million, six hundred four thousand, seven hundred sixty-four".