478308868 has 12 divisors (see below), whose sum is σ = 840299292. Its totient is φ = 238223360.

The previous prime is 478308847. The next prime is 478308877. The reversal of 478308868 is 868803874.

It can be written as a sum of positive squares in 2 ways, for example, as 318336964 + 159971904 = 17842^2 + 12648^2 .

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, 231613 + ... + 233668.

It is an arithmetic number, because the mean of its divisors is an integer number (70024941).

Almost surely, 2^478308868 is an apocalyptic number.

It is an amenable number.

478308868 is a deficient number, since it is larger than the sum of its proper divisors (361990424).

478308868 is a wasteful number, since it uses less digits than its factorization.

478308868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465542 (or 465540 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 52.

The square root of 478308868 is about 21870.2736151151. The cubic root of 478308868 is about 782.0529242945.

The spelling of 478308868 in words is "four hundred seventy-eight million, three hundred eight thousand, eight hundred sixty-eight".