15804228972 has 24 divisors (see below), whose sum is σ = 42144610816. Its totient is φ = 4515493968.

The previous prime is 15804228943. The next prime is 15804228989. The reversal of 15804228972 is 27982240851.

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, 94072708 + ... + 94072875.

Almost surely, 2^15804228972 is an apocalyptic number.

15804228972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15804228972 is an abundant number, since it is smaller than the sum of its proper divisors (26340381844).

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

15804228972 is a wasteful number, since it uses less digits than its factorization.

15804228972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188145597 (or 188145595 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 15804228972 in words is "fifteen billion, eight hundred four million, two hundred twenty-eight thousand, nine hundred seventy-two".