304220322 has 36 divisors (see below), whose sum is σ = 766761606. Its totient is φ = 86919840.

The previous prime is 304220309. The next prime is 304220341. The reversal of 304220322 is 223022403.

It can be written as a sum of positive squares in only one way, i.e., 303073281 + 1147041 = 17409^2 + 1071^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 304220295 and 304220304.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 171579 + ... + 173342.

Almost surely, 2^304220322 is an apocalyptic number.

304220322 is an abundant number, since it is smaller than the sum of its proper divisors (462541284).

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

304220322 is a wasteful number, since it uses less digits than its factorization.

304220322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344943 (or 344933 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 304220322 is about 17441.9127964796. The cubic root of 304220322 is about 672.5574801042.

Adding to 304220322 its reverse (223022403), we get a palindrome (527242725).

The spelling of 304220322 in words is "three hundred four million, two hundred twenty thousand, three hundred twenty-two".