30903808 has 40 divisors (see below), whose sum is σ = 66511368. Its totient is φ = 14260224.

The previous prime is 30903793. The next prime is 30903833. The reversal of 30903808 is 80830903.

It is a self number, because there is not a number n which added to its sum of digits gives 30903808.

It is a congruent number.

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, 4335 + ... + 8977.

Almost surely, 2^30903808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30903808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33255684).

30903808 is an abundant number, since it is smaller than the sum of its proper divisors (35607560).

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

30903808 is an equidigital number, since it uses as much as digits as its factorization.

30903808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674 (or 4658 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 30903808 is about 5559.1193547180. The cubic root of 30903808 is about 313.8128084921.

The spelling of 30903808 in words is "thirty million, nine hundred three thousand, eight hundred eight".