304322140 has 24 divisors (see below), whose sum is σ = 639429840. Its totient is φ = 121661568.

The previous prime is 304322129. The next prime is 304322173. The reversal of 304322140 is 41223403.

It is a super-2 number, since 2×304322140² = 185223929788359200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 49771 + ... + 55549.

It is an arithmetic number, because the mean of its divisors is an integer number (26642910).

Almost surely, 2^304322140 is an apocalyptic number.

It is an amenable number.

304322140 is an abundant number, since it is smaller than the sum of its proper divisors (335107700).

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

304322140 is a wasteful number, since it uses less digits than its factorization.

304322140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8421 (or 8419 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 304322140 is about 17444.8313262124. The cubic root of 304322140 is about 672.6325033843.

Adding to 304322140 its reverse (41223403), we get a palindrome (345545543).

The spelling of 304322140 in words is "three hundred four million, three hundred twenty-two thousand, one hundred forty".