13989128 has 16 divisors (see below), whose sum is σ = 26377260. Its totient is φ = 6955200.

The previous prime is 13989119. The next prime is 13989133. The reversal of 13989128 is 82198931.

It can be written as a sum of positive squares in 2 ways, for example, as 7828804 + 6160324 = 2798^2 + 2482^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3383 + ... + 6278.

Almost surely, 2^13989128 is an apocalyptic number.

It is an amenable number.

13989128 is a deficient number, since it is larger than the sum of its proper divisors (12388132).

13989128 is a wasteful number, since it uses less digits than its factorization.

13989128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9848 (or 9844 counting only the distinct ones).

The product of its digits is 31104, while the sum is 41.

The square root of 13989128 is about 3740.2042724964. The cubic root of 13989128 is about 240.9518220069.

The spelling of 13989128 in words is "thirteen million, nine hundred eighty-nine thousand, one hundred twenty-eight".