30989212 has 24 divisors (see below), whose sum is σ = 56673792. Its totient is φ = 14809200.

The previous prime is 30989207. The next prime is 30989227. The reversal of 30989212 is 21298903.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8787 + ... + 11797.

It is an arithmetic number, because the mean of its divisors is an integer number (2361408).

Almost surely, 2^30989212 is an apocalyptic number.

It is an amenable number.

30989212 is a deficient number, since it is larger than the sum of its proper divisors (25684580).

30989212 is a wasteful number, since it uses less digits than its factorization.

30989212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129 (or 3127 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 30989212 is about 5566.7954875314. The cubic root of 30989212 is about 314.1016209957.

The spelling of 30989212 in words is "thirty million, nine hundred eighty-nine thousand, two hundred twelve".