28137468584 has 16 divisors (see below), whose sum is σ = 52835692500. Its totient is φ = 14047950592.

The previous prime is 28137468563. The next prime is 28137468589. The reversal of 28137468584 is 48586473182.

It can be written as a sum of positive squares in 2 ways, for example, as 19146256900 + 8991211684 = 138370^2 + 94822^2 .

It is not an unprimeable number, because it can be changed into a prime (28137468589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2592209 + ... + 2603040.

Almost surely, 2^28137468584 is an apocalyptic number.

It is an amenable number.

28137468584 is a deficient number, since it is larger than the sum of its proper divisors (24698223916).

28137468584 is a wasteful number, since it uses less digits than its factorization.

28137468584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5195932 (or 5195928 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 56.

The spelling of 28137468584 in words is "twenty-eight billion, one hundred thirty-seven million, four hundred sixty-eight thousand, five hundred eighty-four".