13728793 has 4 divisors (see below), whose sum is σ = 14784868. Its totient is φ = 12672720.

The previous prime is 13728791. The next prime is 13728797. The reversal of 13728793 is 39782731.

13728793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3055504 + 10673289 = 1748^2 + 3267^2 .

It is a cyclic number.

It is not a de Polignac number, because 13728793 - 2¹ = 13728791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13728791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528018 + ... + 528043.

It is an arithmetic number, because the mean of its divisors is an integer number (3696217).

Almost surely, 2^13728793 is an apocalyptic number.

13728793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13728793 is a deficient number, since it is larger than the sum of its proper divisors (1056075).

13728793 is a wasteful number, since it uses less digits than its factorization.

13728793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056074.

The product of its digits is 63504, while the sum is 40.

The square root of 13728793 is about 3705.2385888091. The cubic root of 13728793 is about 239.4477638529.

The spelling of 13728793 in words is "thirteen million, seven hundred twenty-eight thousand, seven hundred ninety-three".