13688436 has 24 divisors (see below), whose sum is σ = 33621280. Its totient is φ = 4322592.

The previous prime is 13688431. The next prime is 13688471. The reversal of 13688436 is 63488631.

It is a junction number, because it is equal to n+sod(n) for n = 13688394 and 13688403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13688431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29791 + ... + 30246.

Almost surely, 2^13688436 is an apocalyptic number.

It is an amenable number.

13688436 is an abundant number, since it is smaller than the sum of its proper divisors (19932844).

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

13688436 is a wasteful number, since it uses less digits than its factorization.

13688436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60063 (or 60061 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 13688436 is about 3699.7886426119. The cubic root of 13688436 is about 239.2129076229.

The spelling of 13688436 in words is "thirteen million, six hundred eighty-eight thousand, four hundred thirty-six".