308908 has 12 divisors (see below), whose sum is σ = 559440. Its totient is φ = 149072.

The previous prime is 308899. The next prime is 308923. The reversal of 308908 is 809803.

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, 1216 + ... + 1447.

It is an arithmetic number, because the mean of its divisors is an integer number (46620).

2³⁰⁸⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

308908 is a deficient number, since it is larger than the sum of its proper divisors (250532).

308908 is a wasteful number, since it uses less digits than its factorization.

308908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696 (or 2694 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 308908 is about 555.7949262093. The cubic root of 308908 is about 67.5994327882.

The spelling of 308908 in words is "three hundred eight thousand, nine hundred eight".