478304388 has 18 divisors (see below), whose sum is σ = 1209047294. Its totient is φ = 159434784.

The previous prime is 478304371. The next prime is 478304413. The reversal of 478304388 is 883403874.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 375119424 + 103184964 = 19368^2 + 10158^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6643081 + ... + 6643152.

Almost surely, 2^478304388 is an apocalyptic number.

It is an amenable number.

478304388 is an abundant number, since it is smaller than the sum of its proper divisors (730742906).

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

478304388 is a wasteful number, since it uses less digits than its factorization.

478304388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13286243 (or 13286238 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 478304388 is about 21870.1711927456. The cubic root of 478304388 is about 782.0504826309.

The spelling of 478304388 in words is "four hundred seventy-eight million, three hundred four thousand, three hundred eighty-eight".