30390168 has 32 divisors (see below), whose sum is σ = 78428160. Its totient is φ = 9803040.

The previous prime is 30390167. The next prime is 30390179. The reversal of 30390168 is 86109303.

It is a super-2 number, since 2×30390168² = 1847124622136448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30390161) 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, 19680 + ... + 21167.

It is an arithmetic number, because the mean of its divisors is an integer number (2450880).

Almost surely, 2^30390168 is an apocalyptic number.

It is an amenable number.

30390168 is an abundant number, since it is smaller than the sum of its proper divisors (48037992).

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

30390168 is a wasteful number, since it uses less digits than its factorization.

30390168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40887 (or 40883 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 30390168 is about 5512.7278184217. The cubic root of 30390168 is about 312.0645001429.

The spelling of 30390168 in words is "thirty million, three hundred ninety thousand, one hundred sixty-eight".