28604104564 has 36 divisors (see below), whose sum is σ = 58247103684. Its totient is φ = 12255255936.

The previous prime is 28604104561. The next prime is 28604104589. The reversal of 28604104564 is 46540140682.

It can be written as a sum of positive squares in 2 ways, for example, as 14675384164 + 13928720400 = 121142^2 + 118020^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28604104561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 700042 + ... + 739774.

Almost surely, 2^28604104564 is an apocalyptic number.

It is an amenable number.

28604104564 is an abundant number, since it is smaller than the sum of its proper divisors (29642999120).

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

28604104564 is a wasteful number, since it uses less digits than its factorization.

28604104564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43424 (or 43415 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 28604104564 in words is "twenty-eight billion, six hundred four million, one hundred four thousand, five hundred sixty-four".