308912 has 20 divisors (see below), whose sum is σ = 613800. Its totient is φ = 150528.

The previous prime is 308899. The next prime is 308923. The reversal of 308912 is 219803.

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, 464 + ... + 912.

It is an arithmetic number, because the mean of its divisors is an integer number (30690).

2³⁰⁸⁹¹² is an apocalyptic number.

It is an amenable number.

308912 is a deficient number, since it is larger than the sum of its proper divisors (304888).

308912 is a wasteful number, since it uses less digits than its factorization.

308912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 308912 is about 555.7985246472. The cubic root of 308912 is about 67.5997245650.

The spelling of 308912 in words is "three hundred eight thousand, nine hundred twelve".