478489520 has 40 divisors (see below), whose sum is σ = 1123521840. Its totient is φ = 189497600.

The previous prime is 478489507. The next prime is 478489541. The reversal of 478489520 is 25984874.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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, 21530 + ... + 37689.

It is an arithmetic number, because the mean of its divisors is an integer number (28088046).

Almost surely, 2^478489520 is an apocalyptic number.

478489520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

478489520 is an abundant number, since it is smaller than the sum of its proper divisors (645032320).

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

478489520 is a wasteful number, since it uses less digits than its factorization.

478489520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59333 (or 59327 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 478489520 is about 21874.4033061476. The cubic root of 478489520 is about 782.1513694983.

The spelling of 478489520 in words is "four hundred seventy-eight million, four hundred eighty-nine thousand, five hundred twenty".