30969128 has 16 divisors (see below), whose sum is σ = 58212000. Its totient is φ = 15445936.

The previous prime is 30969097. The next prime is 30969131. The reversal of 30969128 is 82196903.

It is a junction number, because it is equal to n+sod(n) for n = 30969091 and 30969100.

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, 1268 + ... + 7971.

It is an arithmetic number, because the mean of its divisors is an integer number (3638250).

Almost surely, 2^30969128 is an apocalyptic number.

It is an amenable number.

30969128 is a deficient number, since it is larger than the sum of its proper divisors (27242872).

30969128 is a wasteful number, since it uses less digits than its factorization.

30969128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9664 (or 9660 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 30969128 is about 5564.9912848090. The cubic root of 30969128 is about 314.0337502770.

The spelling of 30969128 in words is "thirty million, nine hundred sixty-nine thousand, one hundred twenty-eight".