13139128 has 16 divisors (see below), whose sum is σ = 24719760. Its totient is φ = 6547200.

The previous prime is 13139111. The next prime is 13139129. The reversal of 13139128 is 82193131.

13139128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13139096 and 13139105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13139129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153 + ... + 5128.

It is an arithmetic number, because the mean of its divisors is an integer number (1544985).

Almost surely, 2^13139128 is an apocalyptic number.

It is an amenable number.

13139128 is a deficient number, since it is larger than the sum of its proper divisors (11580632).

13139128 is a wasteful number, since it uses less digits than its factorization.

13139128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5598 (or 5594 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 13139128 is about 3624.7935113603. The cubic root of 13139128 is about 235.9693055934.

The spelling of 13139128 in words is "thirteen million, one hundred thirty-nine thousand, one hundred twenty-eight".