305708 has 12 divisors (see below), whose sum is σ = 576240. Its totient is φ = 141072.

The previous prime is 305663. The next prime is 305717. The reversal of 305708 is 807503.

It is an unprimeable number.

305708 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2888 + ... + 2991.

It is an arithmetic number, because the mean of its divisors is an integer number (48020).

2³⁰⁵⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

305708 is a deficient number, since it is larger than the sum of its proper divisors (270532).

305708 is a wasteful number, since it uses less digits than its factorization.

305708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5896 (or 5894 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 305708 is about 552.9086723863. The cubic root of 305708 is about 67.3651996558.

The spelling of 305708 in words is "three hundred five thousand, seven hundred eight".