13538636 has 12 divisors (see below), whose sum is σ = 24243912. Its totient is φ = 6611808.

The previous prime is 13538627. The next prime is 13538641. The reversal of 13538636 is 63683531.

13538636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13538596 and 13538605.

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, 39185 + ... + 39528.

It is an arithmetic number, because the mean of its divisors is an integer number (2020326).

Almost surely, 2^13538636 is an apocalyptic number.

It is an amenable number.

13538636 is a deficient number, since it is larger than the sum of its proper divisors (10705276).

13538636 is a wasteful number, since it uses less digits than its factorization.

13538636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78760 (or 78758 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 13538636 is about 3679.4885514158. The cubic root of 13538636 is about 238.3370926537.

It can be divided in two parts, 13538 and 636, that multiplied together give a palindrome (8610168).

The spelling of 13538636 in words is "thirteen million, five hundred thirty-eight thousand, six hundred thirty-six".