15797472 has 48 divisors (see below), whose sum is σ = 42013440. Its totient is φ = 5196672.

The previous prime is 15797459. The next prime is 15797477. The reversal of 15797472 is 27479751.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15797477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6543 + ... + 8625.

It is an arithmetic number, because the mean of its divisors is an integer number (875280).

Almost surely, 2^15797472 is an apocalyptic number.

15797472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15797472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21006720).

15797472 is an abundant number, since it is smaller than the sum of its proper divisors (26215968).

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

15797472 is a wasteful number, since it uses less digits than its factorization.

15797472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175 (or 2167 counting only the distinct ones).

The product of its digits is 123480, while the sum is 42.

The square root of 15797472 is about 3974.6033764390. The cubic root of 15797472 is about 250.9164867691.

The spelling of 15797472 in words is "fifteen million, seven hundred ninety-seven thousand, four hundred seventy-two".