28597174021 has 16 divisors (see below), whose sum is σ = 32049763200. Its totient is φ = 25334463168.

The previous prime is 28597174003. The next prime is 28597174027. The reversal of 28597174021 is 12047179582.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28597174021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28597174027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164151 + ... + 290068.

It is an arithmetic number, because the mean of its divisors is an integer number (2003110200).

Almost surely, 2^28597174021 is an apocalyptic number.

It is an amenable number.

28597174021 is a deficient number, since it is larger than the sum of its proper divisors (3452589179).

28597174021 is a wasteful number, since it uses less digits than its factorization.

28597174021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454428.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 28597174021 in words is "twenty-eight billion, five hundred ninety-seven million, one hundred seventy-four thousand, twenty-one".