478278500 has 48 divisors (see below), whose sum is σ = 1193791872. Its totient is φ = 163980000.

The previous prime is 478278499. The next prime is 478278529. The reversal of 478278500 is 5872874.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64826 + ... + 71825.

It is an arithmetic number, because the mean of its divisors is an integer number (24870664).

Almost surely, 2^478278500 is an apocalyptic number.

It is an amenable number.

478278500 is an abundant number, since it is smaller than the sum of its proper divisors (715513372).

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

478278500 is a wasteful number, since it uses less digits than its factorization.

478278500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136677 (or 136665 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 478278500 is about 21869.5793283730. The cubic root of 478278500 is about 782.0363730048.

The spelling of 478278500 in words is "four hundred seventy-eight million, two hundred seventy-eight thousand, five hundred".