30989128 has 16 divisors (see below), whose sum is σ = 59675580. Its totient is φ = 15075648.

The previous prime is 30989117. The next prime is 30989141. The reversal of 30989128 is 82198903.

It can be written as a sum of positive squares in 2 ways, for example, as 27060804 + 3928324 = 5202^2 + 1982^2 .

It is an unprimeable number.

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, 52051 + ... + 52642.

Almost surely, 2^30989128 is an apocalyptic number.

It is an amenable number.

30989128 is a deficient number, since it is larger than the sum of its proper divisors (28686452).

30989128 is a wasteful number, since it uses less digits than its factorization.

30989128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104736 (or 104732 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 30989128 is about 5566.7879427907. The cubic root of 30989128 is about 314.1013371920.

The spelling of 30989128 in words is "thirty million, nine hundred eighty-nine thousand, one hundred twenty-eight".