308468816 has 20 divisors (see below), whose sum is σ = 598712052. Its totient is φ = 153962496.

The previous prime is 308468813. The next prime is 308468821. The reversal of 308468816 is 618864803.

It can be written as a sum of positive squares in 2 ways, for example, as 302899216 + 5569600 = 17404^2 + 2360^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308468813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7475 + ... + 25938.

Almost surely, 2^308468816 is an apocalyptic number.

It is an amenable number.

308468816 is a deficient number, since it is larger than the sum of its proper divisors (290243236).

308468816 is a wasteful number, since it uses less digits than its factorization.

308468816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33998 (or 33992 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 308468816 is about 17563.2803314187. The cubic root of 308468816 is about 675.6738153008.

The spelling of 308468816 in words is "three hundred eight million, four hundred sixty-eight thousand, eight hundred sixteen".