15457132 has 12 divisors (see below), whose sum is σ = 27560736. Its totient is φ = 7582640.

The previous prime is 15457129. The next prime is 15457147. The reversal of 15457132 is 23175451.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 15457132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36244 + ... + 36667.

It is an arithmetic number, because the mean of its divisors is an integer number (2296728).

Almost surely, 2^15457132 is an apocalyptic number.

It is an amenable number.

15457132 is a deficient number, since it is larger than the sum of its proper divisors (12103604).

15457132 is a wasteful number, since it uses less digits than its factorization.

15457132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72968 (or 72966 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 15457132 is about 3931.5559260934. Note that the first 3 decimals coincide. The cubic root of 15457132 is about 249.1014785054.

The spelling of 15457132 in words is "fifteen million, four hundred fifty-seven thousand, one hundred thirty-two".