13928111 has 2 divisors, whose sum is σ = 13928112. Its totient is φ = 13928110.

The previous prime is 13928077. The next prime is 13928143. The reversal of 13928111 is 11182931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13928111 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 (13928611) 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, 6964055 + 6964056.

It is an arithmetic number, because the mean of its divisors is an integer number (6964056).

Almost surely, 2^13928111 is an apocalyptic number.

13928111 is a deficient number, since it is larger than the sum of its proper divisors (1).

13928111 is an equidigital number, since it uses as much as digits as its factorization.

13928111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 26.

The square root of 13928111 is about 3732.0384510345. The cubic root of 13928111 is about 240.6009880126.

The spelling of 13928111 in words is "thirteen million, nine hundred twenty-eight thousand, one hundred eleven".