478320776 has 16 divisors (see below), whose sum is σ = 905081100. Its totient is φ = 236965824.

The previous prime is 478320769. The next prime is 478320779. The reversal of 478320776 is 677023874.

It can be written as a sum of positive squares in 2 ways, for example, as 454798276 + 23522500 = 21326^2 + 4850^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (478320779) 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, 273395 + ... + 275138.

Almost surely, 2^478320776 is an apocalyptic number.

It is an amenable number.

478320776 is a deficient number, since it is larger than the sum of its proper divisors (426760324).

478320776 is a wasteful number, since it uses less digits than its factorization.

478320776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548648 (or 548644 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 44.

The square root of 478320776 is about 21870.5458550993. The cubic root of 478320776 is about 782.0594142494.

The spelling of 478320776 in words is "four hundred seventy-eight million, three hundred twenty thousand, seven hundred seventy-six".