13128039 has 24 divisors (see below), whose sum is σ = 19796400. Its totient is φ = 8373120.

The previous prime is 13128013. The next prime is 13128061. The reversal of 13128039 is 93082131.

It is not a de Polignac number, because 13128039 - 2⁸ = 13127783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13128079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46579 + ... + 46859.

It is an arithmetic number, because the mean of its divisors is an integer number (824850).

Almost surely, 2^13128039 is an apocalyptic number.

13128039 is a deficient number, since it is larger than the sum of its proper divisors (6668361).

13128039 is a wasteful number, since it uses less digits than its factorization.

13128039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 13128039 is about 3623.2635841186. The cubic root of 13128039 is about 235.9029034166.

The spelling of 13128039 in words is "thirteen million, one hundred twenty-eight thousand, thirty-nine".