13239638 has 8 divisors (see below), whose sum is σ = 20343960. Its totient is φ = 6458320.

The previous prime is 13239619. The next prime is 13239641. The reversal of 13239638 is 83693231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13239598 and 13239607.

It is a congruent number.

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, 80648 + ... + 80811.

It is an arithmetic number, because the mean of its divisors is an integer number (2542995).

Almost surely, 2^13239638 is an apocalyptic number.

13239638 is a deficient number, since it is larger than the sum of its proper divisors (7104322).

13239638 is a wasteful number, since it uses less digits than its factorization.

13239638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161502.

The product of its digits is 23328, while the sum is 35.

The square root of 13239638 is about 3638.6313360933. The cubic root of 13239638 is about 236.5694736352.

The spelling of 13239638 in words is "thirteen million, two hundred thirty-nine thousand, six hundred thirty-eight".