304302220 has 48 divisors (see below), whose sum is σ = 667064160. Its totient is φ = 116458496.

The previous prime is 304302217. The next prime is 304302239. The reversal of 304302220 is 22203403.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 304302194 and 304302203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63219 + ... + 67861.

It is an arithmetic number, because the mean of its divisors is an integer number (13897170).

Almost surely, 2^304302220 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 304302220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333532080).

304302220 is an abundant number, since it is smaller than the sum of its proper divisors (362761940).

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

304302220 is a wasteful number, since it uses less digits than its factorization.

304302220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4794 (or 4792 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 304302220 is about 17444.2603741173. The cubic root of 304302220 is about 672.6178269061.

Adding to 304302220 its reverse (22203403), we get a palindrome (326505623).

The spelling of 304302220 in words is "three hundred four million, three hundred two thousand, two hundred twenty".