13028539 has 2 divisors, whose sum is σ = 13028540. Its totient is φ = 13028538.

The previous prime is 13028531. The next prime is 13028581. The reversal of 13028539 is 93582031.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13028539 - 2³ = 13028531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13028539.

It is not a weakly prime, because it can be changed into another prime (13028531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6514269 + 6514270.

It is an arithmetic number, because the mean of its divisors is an integer number (6514270).

Almost surely, 2^13028539 is an apocalyptic number.

13028539 is a deficient number, since it is larger than the sum of its proper divisors (1).

13028539 is an equidigital number, since it uses as much as digits as its factorization.

13028539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 13028539 is about 3609.5067530066. The cubic root of 13028539 is about 235.3054064523.

The spelling of 13028539 in words is "thirteen million, twenty-eight thousand, five hundred thirty-nine".