304385238 has 24 divisors (see below), whose sum is σ = 698296248. Its totient is φ = 95493312.

The previous prime is 304385233. The next prime is 304385267. The reversal of 304385238 is 832583403.

It is a super-2 number, since 2×304385238² = 185300746224633288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304385231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 497056 + ... + 497667.

It is an arithmetic number, because the mean of its divisors is an integer number (29095677).

Almost surely, 2^304385238 is an apocalyptic number.

304385238 is an abundant number, since it is smaller than the sum of its proper divisors (393911010).

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

304385238 is a wasteful number, since it uses less digits than its factorization.

304385238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994748 (or 994745 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 304385238 is about 17446.6397337711. The cubic root of 304385238 is about 672.6789879338.

The spelling of 304385238 in words is "three hundred four million, three hundred eighty-five thousand, two hundred thirty-eight".