304428320 has 48 divisors (see below), whose sum is σ = 821959488. Its totient is φ = 104375040.

The previous prime is 304428287. The next prime is 304428331. The reversal of 304428320 is 23824403.

It is a self number, because there is not a number n which added to its sum of digits gives 304428320.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134786 + ... + 137025.

It is an arithmetic number, because the mean of its divisors is an integer number (17124156).

Almost surely, 2^304428320 is an apocalyptic number.

It is an amenable number.

304428320 is an abundant number, since it is smaller than the sum of its proper divisors (517531168).

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

304428320 is a wasteful number, since it uses less digits than its factorization.

304428320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271833 (or 271825 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 304428320 is about 17447.8743691030. The cubic root of 304428320 is about 672.7107229255.

The spelling of 304428320 in words is "three hundred four million, four hundred twenty-eight thousand, three hundred twenty".