13539568 has 20 divisors (see below), whose sum is σ = 29980720. Its totient is φ = 5802624.

The previous prime is 13539563. The next prime is 13539583. The reversal of 13539568 is 86593531.

13539568 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 13539568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13539563) 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, 60333 + ... + 60556.

It is an arithmetic number, because the mean of its divisors is an integer number (1499036).

Almost surely, 2^13539568 is an apocalyptic number.

It is an amenable number.

13539568 is an abundant number, since it is smaller than the sum of its proper divisors (16441152).

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

13539568 is a wasteful number, since it uses less digits than its factorization.

13539568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120904 (or 120898 counting only the distinct ones).

The product of its digits is 97200, while the sum is 40.

The square root of 13539568 is about 3679.6151972727. The cubic root of 13539568 is about 238.3425615718.

The spelling of 13539568 in words is "thirteen million, five hundred thirty-nine thousand, five hundred sixty-eight".