30940288 has 64 divisors (see below), whose sum is σ = 65116800. Its totient is φ = 14625792.

The previous prime is 30940279. The next prime is 30940291. The reversal of 30940288 is 88204903.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222523 + ... + 222661.

It is an arithmetic number, because the mean of its divisors is an integer number (1017450).

Almost surely, 2^30940288 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 30940288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32558400).

30940288 is an abundant number, since it is smaller than the sum of its proper divisors (34176512).

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

30940288 is a wasteful number, since it uses less digits than its factorization.

30940288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 30940288 is about 5562.3994822379. The cubic root of 30940288 is about 313.9362386931.

The spelling of 30940288 in words is "thirty million, nine hundred forty thousand, two hundred eighty-eight".