478988520 has 32 divisors (see below), whose sum is σ = 1436965920. Its totient is φ = 127730240.

The previous prime is 478988519. The next prime is 478988539. The reversal of 478988520 is 25889874.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1995666 + ... + 1995905.

It is an arithmetic number, because the mean of its divisors is an integer number (44905185).

Almost surely, 2^478988520 is an apocalyptic number.

478988520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

478988520 is an abundant number, since it is smaller than the sum of its proper divisors (957977400).

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

478988520 is a wasteful number, since it uses less digits than its factorization.

478988520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3991585 (or 3991581 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The square root of 478988520 is about 21885.8063593736. The cubic root of 478988520 is about 782.4231678144.

The spelling of 478988520 in words is "four hundred seventy-eight million, nine hundred eighty-eight thousand, five hundred twenty".