13628539 has 2 divisors, whose sum is σ = 13628540. Its totient is φ = 13628538.

The previous prime is 13628513. The next prime is 13628551. The reversal of 13628539 is 93582631.

It is a strong prime.

It is an emirp because it is prime and its reverse (93582631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13628539 - 2⁵ = 13628507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13628498 and 13628507.

It is not a weakly prime, because it can be changed into another prime (13628569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6814269 + 6814270.

It is an arithmetic number, because the mean of its divisors is an integer number (6814270).

Almost surely, 2^13628539 is an apocalyptic number.

13628539 is a deficient number, since it is larger than the sum of its proper divisors (1).

13628539 is an equidigital number, since it uses as much as digits as its factorization.

13628539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 13628539 is about 3691.6851165829. The cubic root of 13628539 is about 238.8634865203.

The spelling of 13628539 in words is "thirteen million, six hundred twenty-eight thousand, five hundred thirty-nine".