308209668 has 48 divisors (see below), whose sum is σ = 775736640. Its totient is φ = 94679424.

The previous prime is 308209631. The next prime is 308209679. The reversal of 308209668 is 866902803.

308209668 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127818 + ... + 130206.

It is an arithmetic number, because the mean of its divisors is an integer number (16161180).

Almost surely, 2^308209668 is an apocalyptic number.

It is an amenable number.

308209668 is an abundant number, since it is smaller than the sum of its proper divisors (467526972).

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

308209668 is a wasteful number, since it uses less digits than its factorization.

308209668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236 (or 3234 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 308209668 is about 17555.9012300708. The cubic root of 308209668 is about 675.4845486542.

The spelling of 308209668 in words is "three hundred eight million, two hundred nine thousand, six hundred sixty-eight".