478722820 has 24 divisors (see below), whose sum is σ = 1007262144. Its totient is φ = 191118816.

The previous prime is 478722767. The next prime is 478722869. The reversal of 478722820 is 28227874.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12424 + ... + 33343.

It is an arithmetic number, because the mean of its divisors is an integer number (41969256).

Almost surely, 2^478722820 is an apocalyptic number.

It is an amenable number.

478722820 is an abundant number, since it is smaller than the sum of its proper divisors (528539324).

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

478722820 is a wasteful number, since it uses less digits than its factorization.

478722820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46299 (or 46297 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 478722820 is about 21879.7353731712. The cubic root of 478722820 is about 782.2784682525.

The spelling of 478722820 in words is "four hundred seventy-eight million, seven hundred twenty-two thousand, eight hundred twenty".