30990308 has 12 divisors (see below), whose sum is σ = 54289200. Its totient is φ = 15479112.

The previous prime is 30990307. The next prime is 30990313. The reversal of 30990308 is 80309903.

It is not an unprimeable number, because it can be changed into a prime (30990307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043 + ... + 7941.

It is an arithmetic number, because the mean of its divisors is an integer number (4524100).

Almost surely, 2^30990308 is an apocalyptic number.

It is an amenable number.

30990308 is a deficient number, since it is larger than the sum of its proper divisors (23298892).

30990308 is a wasteful number, since it uses less digits than its factorization.

30990308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8026 (or 8024 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 30990308 is about 5566.8939274967. The cubic root of 30990308 is about 314.1053239114.

The spelling of 30990308 in words is "thirty million, nine hundred ninety thousand, three hundred eight".