308039812 has 12 divisors (see below), whose sum is σ = 540517516. Its totient is φ = 153606240.

The previous prime is 308039801. The next prime is 308039857. The reversal of 308039812 is 218930803.

It can be written as a sum of positive squares in 2 ways, for example, as 136796416 + 171243396 = 11696^2 + 13086^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101739 + ... + 104722.

Almost surely, 2^308039812 is an apocalyptic number.

It is an amenable number.

308039812 is a deficient number, since it is larger than the sum of its proper divisors (232477704).

308039812 is a wasteful number, since it uses less digits than its factorization.

308039812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206838 (or 206836 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 308039812 is about 17551.0629877509. The cubic root of 308039812 is about 675.3604381337.

The spelling of 308039812 in words is "three hundred eight million, thirty-nine thousand, eight hundred twelve".