30663288 has 24 divisors (see below), whose sum is σ = 83046600. Its totient is φ = 10221072.

The previous prime is 30663277. The next prime is 30663299. The reversal of 30663288 is 88236603.

It is an interprime number because it is at equal distance from previous prime (30663277) and next prime (30663299).

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212868 + ... + 213011.

It is an arithmetic number, because the mean of its divisors is an integer number (3460275).

Almost surely, 2^30663288 is an apocalyptic number.

It is an amenable number.

30663288 is an abundant number, since it is smaller than the sum of its proper divisors (52383312).

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

30663288 is a wasteful number, since it uses less digits than its factorization.

30663288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425891 (or 425884 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 30663288 is about 5537.4441757908. Note that the first 3 decimals coincide. The cubic root of 30663288 is about 312.9965669036.

The spelling of 30663288 in words is "thirty million, six hundred sixty-three thousand, two hundred eighty-eight".