28160028864 has 112 divisors (see below), whose sum is σ = 90311264640. Its totient is φ = 8533336320.

The previous prime is 28160028859. The next prime is 28160028889. The reversal of 28160028864 is 46882006182.

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, 721734 + ... + 759749.

Almost surely, 2^28160028864 is an apocalyptic number.

28160028864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28160028864 is an abundant number, since it is smaller than the sum of its proper divisors (62151235776).

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

28160028864 is a wasteful number, since it uses less digits than its factorization.

28160028864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481515 (or 1481499 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The spelling of 28160028864 in words is "twenty-eight billion, one hundred sixty million, twenty-eight thousand, eight hundred sixty-four".