15394872 has 16 divisors (see below), whose sum is σ = 38487240. Its totient is φ = 5131616.

The previous prime is 15394871. The next prime is 15394891. The reversal of 15394872 is 27849351.

15394872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 15394872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15394871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320703 + ... + 320750.

Almost surely, 2^15394872 is an apocalyptic number.

15394872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15394872 is an abundant number, since it is smaller than the sum of its proper divisors (23092368).

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

15394872 is a wasteful number, since it uses less digits than its factorization.

15394872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641462 (or 641458 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 15394872 is about 3923.6299519705. The cubic root of 15394872 is about 248.7665753287.

The spelling of 15394872 in words is "fifteen million, three hundred ninety-four thousand, eight hundred seventy-two".