304145320 has 32 divisors (see below), whose sum is σ = 689562720. Its totient is φ = 120727360.

The previous prime is 304145299. The next prime is 304145357. The reversal of 304145320 is 23541403.

It is a junction number, because it is equal to n+sod(n) for n = 304145291 and 304145300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23782 + ... + 34261.

It is an arithmetic number, because the mean of its divisors is an integer number (21548835).

Almost surely, 2^304145320 is an apocalyptic number.

It is an amenable number.

304145320 is an abundant number, since it is smaller than the sum of its proper divisors (385417400).

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

304145320 is a wasteful number, since it uses less digits than its factorization.

304145320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58185 (or 58181 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 304145320 is about 17439.7626130633. The cubic root of 304145320 is about 672.5022051401.

Adding to 304145320 its reverse (23541403), we get a palindrome (327686723).

The spelling of 304145320 in words is "three hundred four million, one hundred forty-five thousand, three hundred twenty".