13597638 has 16 divisors (see below), whose sum is σ = 27540480. Its totient is φ = 4475016.

The previous prime is 13597631. The next prime is 13597651. The reversal of 13597638 is 83679531.

It is a self number, because there is not a number n which added to its sum of digits gives 13597638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13597631) 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, 13870 + ... + 14817.

It is an arithmetic number, because the mean of its divisors is an integer number (1721280).

Almost surely, 2^13597638 is an apocalyptic number.

13597638 is an abundant number, since it is smaller than the sum of its proper divisors (13942842).

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

13597638 is a wasteful number, since it uses less digits than its factorization.

13597638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28771.

The product of its digits is 136080, while the sum is 42.

The square root of 13597638 is about 3687.4975254229. The cubic root of 13597638 is about 238.6828189222.

The spelling of 13597638 in words is "thirteen million, five hundred ninety-seven thousand, six hundred thirty-eight".