13728856 has 8 divisors (see below), whose sum is σ = 25741620. Its totient is φ = 6864424.

The previous prime is 13728823. The next prime is 13728881. The reversal of 13728856 is 65882731.

13728856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 858046 + ... + 858061.

Almost surely, 2^13728856 is an apocalyptic number.

It is an amenable number.

13728856 is a deficient number, since it is larger than the sum of its proper divisors (12012764).

13728856 is a wasteful number, since it uses less digits than its factorization.

13728856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716113 (or 1716109 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 13728856 is about 3705.2470902762. The cubic root of 13728856 is about 239.4481301193.

The spelling of 13728856 in words is "thirteen million, seven hundred twenty-eight thousand, eight hundred fifty-six".