30663900 has 144 divisors (see below), whose sum is σ = 101347680. Its totient is φ = 7948800.

The previous prime is 30663889. The next prime is 30663901. The reversal of 30663900 is 936603.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110562 + ... + 110838.

Almost surely, 2^30663900 is an apocalyptic number.

30663900 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30663900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50673840).

30663900 is an abundant number, since it is smaller than the sum of its proper divisors (70683780).

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

30663900 is a wasteful number, since it uses less digits than its factorization.

30663900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 30663900 is about 5537.4994356659. The cubic root of 30663900 is about 312.9986492268.

The spelling of 30663900 in words is "thirty million, six hundred sixty-three thousand, nine hundred".