306345904 has 20 divisors (see below), whose sum is σ = 603277360. Its totient is φ = 150661440.

The previous prime is 306345881. The next prime is 306345913. The reversal of 306345904 is 409543603.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 306345904.

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 3 ways as a sum of consecutive naturals, for example, 155964 + ... + 157915.

It is an arithmetic number, because the mean of its divisors is an integer number (30163868).

Almost surely, 2^306345904 is an apocalyptic number.

It is an amenable number.

306345904 is a deficient number, since it is larger than the sum of its proper divisors (296931456).

306345904 is a wasteful number, since it uses less digits than its factorization.

306345904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313948 (or 313942 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 306345904 is about 17502.7398997985. The cubic root of 306345904 is about 674.1202285031.

The spelling of 306345904 in words is "three hundred six million, three hundred forty-five thousand, nine hundred four".