28572487528 has 16 divisors (see below), whose sum is σ = 57694446180. Its totient is φ = 13187301888.

The previous prime is 28572487513. The next prime is 28572487577. The reversal of 28572487528 is 82578427582.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28209889764 + 362597764 = 167958^2 + 19042^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137367625 + ... + 137367832.

Almost surely, 2^28572487528 is an apocalyptic number.

It is an amenable number.

28572487528 is an abundant number, since it is smaller than the sum of its proper divisors (29121958652).

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

28572487528 is a wasteful number, since it uses less digits than its factorization.

28572487528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274735476 (or 274735472 counting only the distinct ones).

The product of its digits is 20070400, while the sum is 58.

The spelling of 28572487528 in words is "twenty-eight billion, five hundred seventy-two million, four hundred eighty-seven thousand, five hundred twenty-eight".