28245172756 has 24 divisors (see below), whose sum is σ = 49992014016. Its totient is φ = 13962051840.

The previous prime is 28245172729. The next prime is 28245172771. The reversal of 28245172756 is 65727154282.

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, 329001 + ... + 405871.

It is an arithmetic number, because the mean of its divisors is an integer number (2083000584).

Almost surely, 2^28245172756 is an apocalyptic number.

It is an amenable number.

28245172756 is a deficient number, since it is larger than the sum of its proper divisors (21746841260).

28245172756 is a wasteful number, since it uses less digits than its factorization.

28245172756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77919 (or 77917 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 49.

The spelling of 28245172756 in words is "twenty-eight billion, two hundred forty-five million, one hundred seventy-two thousand, seven hundred fifty-six".