478222940 has 48 divisors (see below), whose sum is σ = 1083505248. Its totient is φ = 176250624.

The previous prime is 478222939. The next prime is 478222973. The reversal of 478222940 is 49222874.

It is a junction number, because it is equal to n+sod(n) for n = 478222894 and 478222903.

It is a congruent number.

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, 176234 + ... + 178926.

It is an arithmetic number, because the mean of its divisors is an integer number (22573026).

Almost surely, 2^478222940 is an apocalyptic number.

It is an amenable number.

478222940 is an abundant number, since it is smaller than the sum of its proper divisors (605282308).

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

478222940 is a wasteful number, since it uses less digits than its factorization.

478222940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398 (or 3396 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 478222940 is about 21868.3090338508. The cubic root of 478222940 is about 782.0060896563.

The spelling of 478222940 in words is "four hundred seventy-eight million, two hundred twenty-two thousand, nine hundred forty".