13728659 has 16 divisors (see below), whose sum is σ = 16684800. Its totient is φ = 11034144.

The previous prime is 13728647. The next prime is 13728661. The reversal of 13728659 is 95682731.

It is a cyclic number.

It is not a de Polignac number, because 13728659 - 2¹⁶ = 13663123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13728679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14024 + ... + 14970.

It is an arithmetic number, because the mean of its divisors is an integer number (1042800).

Almost surely, 2^13728659 is an apocalyptic number.

13728659 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13728659 is a deficient number, since it is larger than the sum of its proper divisors (2956141).

13728659 is a wasteful number, since it uses less digits than its factorization.

13728659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082.

The product of its digits is 90720, while the sum is 41.

The square root of 13728659 is about 3705.2205062587. The cubic root of 13728659 is about 239.4469848064.

The spelling of 13728659 in words is "thirteen million, seven hundred twenty-eight thousand, six hundred fifty-nine".