28376565564 has 24 divisors (see below), whose sum is σ = 66469627728. Its totient is φ = 9422049280.

The previous prime is 28376565557. The next prime is 28376565571. The reversal of 28376565564 is 46556567382.

It is an interprime number because it is at equal distance from previous prime (28376565557) and next prime (28376565571).

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, 4597527 + ... + 4603694.

It is an arithmetic number, because the mean of its divisors is an integer number (2769567822).

Almost surely, 2^28376565564 is an apocalyptic number.

It is an amenable number.

28376565564 is an abundant number, since it is smaller than the sum of its proper divisors (38093062164).

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

28376565564 is a wasteful number, since it uses less digits than its factorization.

28376565564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9201485 (or 9201483 counting only the distinct ones).

The product of its digits is 36288000, while the sum is 57.

The spelling of 28376565564 in words is "twenty-eight billion, three hundred seventy-six million, five hundred sixty-five thousand, five hundred sixty-four".