28318168472 has 64 divisors (see below), whose sum is σ = 63445744800. Its totient is φ = 11696957440.

The previous prime is 28318168447. The next prime is 28318168511. The reversal of 28318168472 is 27486181382.

It is a self number, because there is not a number n which added to its sum of digits gives 28318168472.

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, 282983 + ... + 369750.

Almost surely, 2^28318168472 is an apocalyptic number.

28318168472 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28318168472 is an abundant number, since it is smaller than the sum of its proper divisors (35127576328).

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

28318168472 is a wasteful number, since it uses less digits than its factorization.

28318168472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652796 (or 652792 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 50.

The spelling of 28318168472 in words is "twenty-eight billion, three hundred eighteen million, one hundred sixty-eight thousand, four hundred seventy-two".