13728099 has 32 divisors (see below), whose sum is σ = 23187456. Its totient is φ = 7017120.

The previous prime is 13728041. The next prime is 13728101. The reversal of 13728099 is 99082731.

13728099 = T₃₈₄ + T₃₈₅ + ... + T₅₁₇.

It is not a de Polignac number, because 13728099 - 2⁷ = 13727971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13728899) 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 31 ways as a sum of consecutive naturals, for example, 15034 + ... + 15920.

It is an arithmetic number, because the mean of its divisors is an integer number (724608).

Almost surely, 2^13728099 is an apocalyptic number.

13728099 is a deficient number, since it is larger than the sum of its proper divisors (9459357).

13728099 is a wasteful number, since it uses less digits than its factorization.

13728099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 13728099 is about 3705.1449364364. The cubic root of 13728099 is about 239.4437290348.

The spelling of 13728099 in words is "thirteen million, seven hundred twenty-eight thousand, ninety-nine".