304140222 has 48 divisors (see below), whose sum is σ = 679408080. Its totient is φ = 98257536.

The previous prime is 304140203. The next prime is 304140227. The reversal of 304140222 is 222041403.

304140222 is a `hidden beast` number, since 30 + 414 + 0 + 222 = 666.

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 = 304140195 and 304140204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304140227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207729 + ... + 209187.

It is an arithmetic number, because the mean of its divisors is an integer number (14154335).

Almost surely, 2^304140222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304140222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339704040).

304140222 is an abundant number, since it is smaller than the sum of its proper divisors (375267858).

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

304140222 is a wasteful number, since it uses less digits than its factorization.

304140222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817 (or 1814 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 304140222 is about 17439.6164522044. The cubic root of 304140222 is about 672.4984476869.

Adding to 304140222 its reverse (222041403), we get a palindrome (526181625).

The spelling of 304140222 in words is "three hundred four million, one hundred forty thousand, two hundred twenty-two".