28187027764 has 48 divisors (see below), whose sum is σ = 57200726016. Its totient is φ = 11903328000.

The previous prime is 28187027711. The next prime is 28187027773. The reversal of 28187027764 is 46772078182.

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, 2346654 + ... + 2358634.

It is an arithmetic number, because the mean of its divisors is an integer number (1191681792).

Almost surely, 2^28187027764 is an apocalyptic number.

It is an amenable number.

28187027764 is an abundant number, since it is smaller than the sum of its proper divisors (29013698252).

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

28187027764 is a wasteful number, since it uses less digits than its factorization.

28187027764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13216 (or 13214 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 52.

The spelling of 28187027764 in words is "twenty-eight billion, one hundred eighty-seven million, twenty-seven thousand, seven hundred sixty-four".