305712328 has 32 divisors (see below), whose sum is σ = 593084160. Its totient is φ = 147579840.

The previous prime is 305712317. The next prime is 305712331. The reversal of 305712328 is 823217503.

305712328 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 305712328.

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, 128526 + ... + 130882.

It is an arithmetic number, because the mean of its divisors is an integer number (18533880).

Almost surely, 2^305712328 is an apocalyptic number.

It is an amenable number.

305712328 is a deficient number, since it is larger than the sum of its proper divisors (287371832).

305712328 is a wasteful number, since it uses less digits than its factorization.

305712328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917 (or 2913 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 305712328 is about 17484.6311942803. The cubic root of 305712328 is about 673.6551755741.

The spelling of 305712328 in words is "three hundred five million, seven hundred twelve thousand, three hundred twenty-eight".