478218872 has 8 divisors (see below), whose sum is σ = 896660400. Its totient is φ = 239109432.

The previous prime is 478218773. The next prime is 478218887. The reversal of 478218872 is 278812874.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29888672 + ... + 29888687.

It is an arithmetic number, because the mean of its divisors is an integer number (112082550).

Almost surely, 2^478218872 is an apocalyptic number.

It is an amenable number.

478218872 is a deficient number, since it is larger than the sum of its proper divisors (418441528).

478218872 is a wasteful number, since it uses less digits than its factorization.

478218872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59777365 (or 59777361 counting only the distinct ones).

The product of its digits is 401408, while the sum is 47.

The square root of 478218872 is about 21868.2160223462. The cubic root of 478218872 is about 782.0038722737.

The spelling of 478218872 in words is "four hundred seventy-eight million, two hundred eighteen thousand, eight hundred seventy-two".