304222240 has 96 divisors (see below), whose sum is σ = 827366400. Its totient is φ = 103547904.

The previous prime is 304222229. The next prime is 304222241. The reversal of 304222240 is 42222403.

It is not an unprimeable number, because it can be changed into a prime (304222241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165969 + ... + 167791.

It is an arithmetic number, because the mean of its divisors is an integer number (8618400).

Almost surely, 2^304222240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304222240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413683200).

304222240 is an abundant number, since it is smaller than the sum of its proper divisors (523144160).

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

304222240 is a wasteful number, since it uses less digits than its factorization.

304222240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994 (or 1986 counting only the distinct ones).

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

The square root of 304222240 is about 17441.9677788947. The cubic root of 304222240 is about 672.5588935124.

Adding to 304222240 its reverse (42222403), we get a palindrome (346444643).

The spelling of 304222240 in words is "three hundred four million, two hundred twenty-two thousand, two hundred forty".