304242220 has 24 divisors (see below), whose sum is σ = 641592000. Its totient is φ = 121185792.

The previous prime is 304242209. The next prime is 304242223. The reversal of 304242220 is 22242403.

It is not an unprimeable number, because it can be changed into a prime (304242223) 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, 27045 + ... + 36604.

It is an arithmetic number, because the mean of its divisors is an integer number (26733000).

Almost surely, 2^304242220 is an apocalyptic number.

It is an amenable number.

304242220 is an abundant number, since it is smaller than the sum of its proper divisors (337349780).

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

304242220 is a wasteful number, since it uses less digits than its factorization.

304242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63897 (or 63895 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 304242220 is about 17442.5405259670. The cubic root of 304242220 is about 672.5736167758.

Adding to 304242220 its reverse (22242403), we get a palindrome (326484623).

The spelling of 304242220 in words is "three hundred four million, two hundred forty-two thousand, two hundred twenty".