304220 has 48 divisors (see below), whose sum is σ = 762048. Its totient is φ = 99840.

The previous prime is 304217. The next prime is 304223. The reversal of 304220 is 22403.

304220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (304217) and next prime (304223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304223) 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, 5714 + ... + 5766.

It is an arithmetic number, because the mean of its divisors is an integer number (15876).

2³⁰⁴²²⁰ 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 304220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381024).

304220 is an abundant number, since it is smaller than the sum of its proper divisors (457828).

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

304220 is a wasteful number, since it uses less digits than its factorization.

304220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 304220 is about 551.5614199706. The cubic root of 304220 is about 67.2557242816.

Adding to 304220 its reverse (22403), we get a palindrome (326623).

The spelling of 304220 in words is "three hundred four thousand, two hundred twenty", and thus it is an iban number.