478550820 has 48 divisors (see below), whose sum is σ = 1461757248. Its totient is φ = 116012160.

The previous prime is 478550803. The next prime is 478550869. The reversal of 478550820 is 28055874.

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, 361879 + ... + 363198.

It is an arithmetic number, because the mean of its divisors is an integer number (30453276).

Almost surely, 2^478550820 is an apocalyptic number.

It is an amenable number.

478550820 is an abundant number, since it is smaller than the sum of its proper divisors (983206428).

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

478550820 is a wasteful number, since it uses less digits than its factorization.

478550820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725100 (or 725098 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 478550820 is about 21875.8044423514. The cubic root of 478550820 is about 782.1847689283.

The spelling of 478550820 in words is "four hundred seventy-eight million, five hundred fifty thousand, eight hundred twenty".