30990708 has 48 divisors (see below), whose sum is σ = 91826560. Its totient is φ = 8854272.

The previous prime is 30990703. The next prime is 30990737. The reversal of 30990708 is 80709903.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30990703) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19741 + ... + 21252.

Almost surely, 2^30990708 is an apocalyptic number.

It is an amenable number.

30990708 is an abundant number, since it is smaller than the sum of its proper divisors (60835852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30990708 is a wasteful number, since it uses less digits than its factorization.

30990708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41013 (or 41005 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 30990708 is about 5566.9298540578. The cubic root of 30990708 is about 314.1066753187.

The spelling of 30990708 in words is "thirty million, nine hundred ninety thousand, seven hundred eight".