305906856 has 16 divisors (see below), whose sum is σ = 764767200. Its totient is φ = 101968944.

The previous prime is 305906849. The next prime is 305906873. The reversal of 305906856 is 658609503.

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, 6373036 + ... + 6373083.

It is an arithmetic number, because the mean of its divisors is an integer number (47797950).

Almost surely, 2^305906856 is an apocalyptic number.

It is an amenable number.

305906856 is an abundant number, since it is smaller than the sum of its proper divisors (458860344).

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

305906856 is a wasteful number, since it uses less digits than its factorization.

305906856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12746128 (or 12746124 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 305906856 is about 17490.1931378701. The cubic root of 305906856 is about 673.7980299253.

The spelling of 305906856 in words is "three hundred five million, nine hundred six thousand, eight hundred fifty-six".