478291728 has 40 divisors (see below), whose sum is σ = 1255850176. Its totient is φ = 156816000.

The previous prime is 478291721. The next prime is 478291729. The reversal of 478291728 is 827192874.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (478291721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78748 + ... + 84603.

Almost surely, 2^478291728 is an apocalyptic number.

478291728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

478291728 is an abundant number, since it is smaller than the sum of its proper divisors (777558448).

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

478291728 is a wasteful number, since it uses less digits than its factorization.

478291728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163423 (or 163417 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The square root of 478291728 is about 21869.8817555102. The cubic root of 478291728 is about 782.0435826688.

The spelling of 478291728 in words is "four hundred seventy-eight million, two hundred ninety-one thousand, seven hundred twenty-eight".