13539128 has 16 divisors (see below), whose sum is σ = 25471680. Its totient is φ = 6746688.

The previous prime is 13539121. The next prime is 13539131. The reversal of 13539128 is 82193531.

It is a junction number, because it is equal to n+sod(n) for n = 13539094 and 13539103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13539121) 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 in 3 ways as a sum of consecutive naturals, for example, 200 + ... + 5207.

It is an arithmetic number, because the mean of its divisors is an integer number (1591980).

Almost surely, 2^13539128 is an apocalyptic number.

It is an amenable number.

13539128 is a deficient number, since it is larger than the sum of its proper divisors (11932552).

13539128 is a wasteful number, since it uses less digits than its factorization.

13539128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5726 (or 5722 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 13539128 is about 3679.5554079263. Note that the first 3 decimals coincide. The cubic root of 13539128 is about 238.3399797104.

The spelling of 13539128 in words is "thirteen million, five hundred thirty-nine thousand, one hundred twenty-eight".