13686328 has 8 divisors (see below), whose sum is σ = 25661880. Its totient is φ = 6843160.

The previous prime is 13686319. The next prime is 13686359. The reversal of 13686328 is 82368631.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 855388 + ... + 855403.

It is an arithmetic number, because the mean of its divisors is an integer number (3207735).

Almost surely, 2^13686328 is an apocalyptic number.

It is an amenable number.

13686328 is a deficient number, since it is larger than the sum of its proper divisors (11975552).

13686328 is a wasteful number, since it uses less digits than its factorization.

13686328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710797 (or 1710793 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 13686328 is about 3699.5037505049. The cubic root of 13686328 is about 239.2006275081.

The spelling of 13686328 in words is "thirteen million, six hundred eighty-six thousand, three hundred twenty-eight".