13565972 has 24 divisors (see below), whose sum is σ = 28008960. Its totient is φ = 5626080.

The previous prime is 13565971. The next prime is 13565977. The reversal of 13565972 is 27956531.

It is a happy number.

It is a Smith number, since the sum of its digits (38) 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 (13565971) 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, 6947 + ... + 8682.

It is an arithmetic number, because the mean of its divisors is an integer number (1167040).

Almost surely, 2^13565972 is an apocalyptic number.

It is an amenable number.

13565972 is an abundant number, since it is smaller than the sum of its proper divisors (14442988).

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

13565972 is a wasteful number, since it uses less digits than its factorization.

13565972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15671 (or 15669 counting only the distinct ones).

The product of its digits is 56700, while the sum is 38.

The square root of 13565972 is about 3683.2013249346. The cubic root of 13565972 is about 238.4973944429.

The spelling of 13565972 in words is "thirteen million, five hundred sixty-five thousand, nine hundred seventy-two".