13639368 has 32 divisors (see below), whose sum is σ = 35582400. Its totient is φ = 4348608.

The previous prime is 13639361. The next prime is 13639427. The reversal of 13639368 is 86393631.

It is not an unprimeable number, because it can be changed into a prime (13639361) 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, 11803 + ... + 12906.

It is an arithmetic number, because the mean of its divisors is an integer number (1111950).

Almost surely, 2^13639368 is an apocalyptic number.

It is an amenable number.

13639368 is an abundant number, since it is smaller than the sum of its proper divisors (21943032).

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

13639368 is a wasteful number, since it uses less digits than its factorization.

13639368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24741 (or 24737 counting only the distinct ones).

The product of its digits is 69984, while the sum is 39.

The square root of 13639368 is about 3693.1514997357. The cubic root of 13639368 is about 238.9267353615.

It can be divided in two parts, 1363 and 9368, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 13639368 in words is "thirteen million, six hundred thirty-nine thousand, three hundred sixty-eight".