304500220 has 48 divisors (see below), whose sum is σ = 673485120. Its totient is φ = 115416576.

The previous prime is 304500179. The next prime is 304500221. The reversal of 304500220 is 22005403.

It is a junction number, because it is equal to n+sod(n) for n = 304500194 and 304500203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304500221) 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, 47104 + ... + 53176.

It is an arithmetic number, because the mean of its divisors is an integer number (14030940).

Almost surely, 2^304500220 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 304500220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336742560).

304500220 is an abundant number, since it is smaller than the sum of its proper divisors (368984900).

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

304500220 is a wasteful number, since it uses less digits than its factorization.

304500220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6214 (or 6212 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 304500220 is about 17449.9346703648. The cubic root of 304500220 is about 672.7636791175.

Adding to 304500220 its reverse (22005403), we get a palindrome (326505623).

The spelling of 304500220 in words is "three hundred four million, five hundred thousand, two hundred twenty".