28189244976 has 20 divisors (see below), whose sum is σ = 72822216312. Its totient is φ = 9396414976.

The previous prime is 28189244959. The next prime is 28189244989. The reversal of 28189244976 is 67944298182.

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, 293637921 + ... + 293638016.

Almost surely, 2^28189244976 is an apocalyptic number.

It is an amenable number.

28189244976 is an abundant number, since it is smaller than the sum of its proper divisors (44632971336).

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

28189244976 is a wasteful number, since it uses less digits than its factorization.

28189244976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587275948 (or 587275942 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 60.

The spelling of 28189244976 in words is "twenty-eight billion, one hundred eighty-nine million, two hundred forty-four thousand, nine hundred seventy-six".