28056588252 has 48 divisors (see below), whose sum is σ = 81619168512. Its totient is φ = 7287425280.

The previous prime is 28056588239. The next prime is 28056588277. The reversal of 28056588252 is 25288565082.

It is a junction number, because it is equal to n+sod(n) for n = 28056588195 and 28056588204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15181213 + ... + 15183060.

It is an arithmetic number, because the mean of its divisors is an integer number (1700399344).

Almost surely, 2^28056588252 is an apocalyptic number.

28056588252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28056588252 is an abundant number, since it is smaller than the sum of its proper divisors (53562580260).

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

28056588252 is a wasteful number, since it uses less digits than its factorization.

28056588252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30364298 (or 30364296 counting only the distinct ones).

The product of its (nonzero) digits is 3072000, while the sum is 51.

The spelling of 28056588252 in words is "twenty-eight billion, fifty-six million, five hundred eighty-eight thousand, two hundred fifty-two".