13728797 has 2 divisors, whose sum is σ = 13728798. Its totient is φ = 13728796.

The previous prime is 13728791. The next prime is 13728821. The reversal of 13728797 is 79782731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9174841 + 4553956 = 3029^2 + 2134^2 .

It is a cyclic number.

It is not a de Polignac number, because 13728797 - 2¹⁰ = 13727773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13728791) 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 as a sum of consecutive naturals, namely, 6864398 + 6864399.

It is an arithmetic number, because the mean of its divisors is an integer number (6864399).

Almost surely, 2^13728797 is an apocalyptic number.

It is an amenable number.

13728797 is a deficient number, since it is larger than the sum of its proper divisors (1).

13728797 is an equidigital number, since it uses as much as digits as its factorization.

13728797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 44.

The square root of 13728797 is about 3705.2391285854. The cubic root of 13728797 is about 239.4477871080.

The spelling of 13728797 in words is "thirteen million, seven hundred twenty-eight thousand, seven hundred ninety-seven".