478286028 has 72 divisors (see below), whose sum is σ = 1321341840. Its totient is φ = 144668160.

The previous prime is 478286027. The next prime is 478286047. The reversal of 478286028 is 820682874.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (478286021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 370408 + ... + 371696.

It is an arithmetic number, because the mean of its divisors is an integer number (18351970).

Almost surely, 2^478286028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478286028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (660670920).

478286028 is an abundant number, since it is smaller than the sum of its proper divisors (843055812).

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

478286028 is a wasteful number, since it uses less digits than its factorization.

478286028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247 (or 2242 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 478286028 is about 21869.7514389167. The cubic root of 478286028 is about 782.0404760110.

The spelling of 478286028 in words is "four hundred seventy-eight million, two hundred eighty-six thousand, twenty-eight".