15397072 has 20 divisors (see below), whose sum is σ = 29953440. Its totient is φ = 7667168.

The previous prime is 15397037. The next prime is 15397073. The reversal of 15397072 is 27079351.

15397072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15397073) 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, 2379 + ... + 6037.

It is an arithmetic number, because the mean of its divisors is an integer number (1497672).

Almost surely, 2^15397072 is an apocalyptic number.

It is an amenable number.

15397072 is a deficient number, since it is larger than the sum of its proper divisors (14556368).

15397072 is a wasteful number, since it uses less digits than its factorization.

15397072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930 (or 3924 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 15397072 is about 3923.9102945914. The cubic root of 15397072 is about 248.7784247376.

The spelling of 15397072 in words is "fifteen million, three hundred ninety-seven thousand, seventy-two".