30663904 has 48 divisors (see below), whose sum is σ = 63141120. Its totient is φ = 14640640.

The previous prime is 30663901. The next prime is 30663911. The reversal of 30663904 is 40936603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30663901) 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 7 ways as a sum of consecutive naturals, for example, 160449 + ... + 160639.

It is an arithmetic number, because the mean of its divisors is an integer number (1315440).

Almost surely, 2^30663904 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 30663904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31570560).

30663904 is an abundant number, since it is smaller than the sum of its proper divisors (32477216).

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

30663904 is a wasteful number, since it uses less digits than its factorization.

30663904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 30663904 is about 5537.4997968397. The cubic root of 30663904 is about 312.9986628366.

The spelling of 30663904 in words is "thirty million, six hundred sixty-three thousand, nine hundred four".