304223222 has 4 divisors (see below), whose sum is σ = 456334836. Its totient is φ = 152111610.

The previous prime is 304223221. The next prime is 304223263. The reversal of 304223222 is 222322403.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×304223222² = 185103537608122568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 304223194 and 304223203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304223221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76055804 + ... + 76055807.

It is an arithmetic number, because the mean of its divisors is an integer number (114083709).

Almost surely, 2^304223222 is an apocalyptic number.

304223222 is a deficient number, since it is larger than the sum of its proper divisors (152111614).

304223222 is a wasteful number, since it uses less digits than its factorization.

304223222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152111613.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 304223222 is about 17441.9959293654. The cubic root of 304223222 is about 672.5596171633.

Adding to 304223222 its reverse (222322403), we get a palindrome (526545625).

The spelling of 304223222 in words is "three hundred four million, two hundred twenty-three thousand, two hundred twenty-two".