478307826 has 48 divisors (see below), whose sum is σ = 1058596344. Its totient is φ = 156045312.

The previous prime is 478307813. The next prime is 478307827. The reversal of 478307826 is 628703874.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 451775025 + 26532801 = 21255^2 + 5151^2 .

It is not an unprimeable number, because it can be changed into a prime (478307827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178690 + ... + 181346.

Almost surely, 2^478307826 is an apocalyptic number.

478307826 is an abundant number, since it is smaller than the sum of its proper divisors (580288518).

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

478307826 is a wasteful number, since it uses less digits than its factorization.

478307826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875 (or 2872 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 478307826 is about 21870.2497928122. The cubic root of 478307826 is about 782.0523563910.

The spelling of 478307826 in words is "four hundred seventy-eight million, three hundred seven thousand, eight hundred twenty-six".