13816728 has 24 divisors (see below), whose sum is σ = 37420500. Its totient is φ = 4605552.

The previous prime is 13816709. The next prime is 13816741. The reversal of 13816728 is 82761831.

13816728 is digitally balanced in base 2 and base 4, because in such bases 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 (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13816692 and 13816701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95878 + ... + 96021.

Almost surely, 2^13816728 is an apocalyptic number.

13816728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13816728 is an abundant number, since it is smaller than the sum of its proper divisors (23603772).

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

13816728 is a wasteful number, since it uses less digits than its factorization.

13816728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191911 (or 191904 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 13816728 is about 3717.0859554226. The cubic root of 13816728 is about 239.9579092853.

The spelling of 13816728 in words is "thirteen million, eight hundred sixteen thousand, seven hundred twenty-eight".