478388420 has 48 divisors (see below), whose sum is σ = 1019608128. Its totient is φ = 188522880.

The previous prime is 478388399. The next prime is 478388473. The reversal of 478388420 is 24883874.

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 in 15 ways as a sum of consecutive naturals, for example, 410759 + ... + 411921.

It is an arithmetic number, because the mean of its divisors is an integer number (21241836).

Almost surely, 2^478388420 is an apocalyptic number.

It is an amenable number.

478388420 is an abundant number, since it is smaller than the sum of its proper divisors (541219708).

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

478388420 is a wasteful number, since it uses less digits than its factorization.

478388420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 44.

The square root of 478388420 is about 21872.0922638873. The cubic root of 478388420 is about 782.0962787248.

The spelling of 478388420 in words is "four hundred seventy-eight million, three hundred eighty-eight thousand, four hundred twenty".