30238218 has 16 divisors (see below), whose sum is σ = 67196160. Its totient is φ = 10079388.

The previous prime is 30238193. The next prime is 30238259. The reversal of 30238218 is 81283203.

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

It is a junction number, because it is equal to n+sod(n) for n = 30238191 and 30238200.

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, 279930 + ... + 280037.

It is an arithmetic number, because the mean of its divisors is an integer number (4199760).

Almost surely, 2^30238218 is an apocalyptic number.

30238218 is an abundant number, since it is smaller than the sum of its proper divisors (36957942).

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

30238218 is a wasteful number, since it uses less digits than its factorization.

30238218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559978 (or 559972 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 30238218 is about 5498.9288047764. The cubic root of 30238218 is about 311.5435262657.

The spelling of 30238218 in words is "thirty million, two hundred thirty-eight thousand, two hundred eighteen".