308664864 has 192 divisors, whose sum is σ = 948326400. Its totient is φ = 97542144.

The previous prime is 308664859. The next prime is 308664871. The reversal of 308664864 is 468466803.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2430369 + ... + 2430495.

It is an arithmetic number, because the mean of its divisors is an integer number (4939200).

Almost surely, 2^308664864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308664864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474163200).

308664864 is an abundant number, since it is smaller than the sum of its proper divisors (639661536).

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

308664864 is a wasteful number, since it uses less digits than its factorization.

308664864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 308664864 is about 17568.8606346570. The cubic root of 308664864 is about 675.8169269547.

The spelling of 308664864 in words is "three hundred eight million, six hundred sixty-four thousand, eight hundred sixty-four".