13728664 has 16 divisors (see below), whose sum is σ = 25992720. Its totient is φ = 6797280.

The previous prime is 13728661. The next prime is 13728679. The reversal of 13728664 is 46682731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13728661) 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 3 ways as a sum of consecutive naturals, for example, 7507 + ... + 9154.

It is an arithmetic number, because the mean of its divisors is an integer number (1624545).

Almost surely, 2^13728664 is an apocalyptic number.

It is an amenable number.

13728664 is a deficient number, since it is larger than the sum of its proper divisors (12264056).

13728664 is a wasteful number, since it uses less digits than its factorization.

13728664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16770 (or 16766 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 13728664 is about 3705.2211809823. The cubic root of 13728664 is about 239.4470138754.

The spelling of 13728664 in words is "thirteen million, seven hundred twenty-eight thousand, six hundred sixty-four".