15800472 has 24 divisors (see below), whose sum is σ = 42793140. Its totient is φ = 5266800.

The previous prime is 15800467. The next prime is 15800513. The reversal of 15800472 is 27400851.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109654 + ... + 109797.

Almost surely, 2^15800472 is an apocalyptic number.

15800472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15800472 is an abundant number, since it is smaller than the sum of its proper divisors (26992668).

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

15800472 is a wasteful number, since it uses less digits than its factorization.

15800472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219463 (or 219456 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 15800472 is about 3974.9807546704. The cubic root of 15800472 is about 250.9323690954.

It can be divided in two parts, 1580047 and 2, that added together give a square (1580049 = 1257²).

The spelling of 15800472 in words is "fifteen million, eight hundred thousand, four hundred seventy-two".