30690909 has 12 divisors (see below), whose sum is σ = 46664800. Its totient is φ = 19383624.

The previous prime is 30690889. The next prime is 30690923. The reversal of 30690909 is 90909603.

It is not a de Polignac number, because 30690909 - 2²⁴ = 13913693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30690109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89569 + ... + 89910.

Almost surely, 2^30690909 is an apocalyptic number.

It is an amenable number.

30690909 is a deficient number, since it is larger than the sum of its proper divisors (15973891).

30690909 is a wasteful number, since it uses less digits than its factorization.

30690909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179504 (or 179501 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 30690909 is about 5539.9376350280. The cubic root of 30690909 is about 313.0905194681.

The spelling of 30690909 in words is "thirty million, six hundred ninety thousand, nine hundred nine".