30390288 has 40 divisors (see below), whose sum is σ = 83128608. Its totient is φ = 9533952.

The previous prime is 30390287. The next prime is 30390317. The reversal of 30390288 is 88209303.

It is not an unprimeable number, because it can be changed into a prime (30390281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17806 + ... + 19437.

Almost surely, 2^30390288 is an apocalyptic number.

It is an amenable number.

30390288 is an abundant number, since it is smaller than the sum of its proper divisors (52738320).

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

30390288 is a wasteful number, since it uses less digits than its factorization.

30390288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37271 (or 37265 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 30390288 is about 5512.7387023148. The cubic root of 30390288 is about 312.0649108863.

The spelling of 30390288 in words is "thirty million, three hundred ninety thousand, two hundred eighty-eight".