478172440 has 16 divisors (see below), whose sum is σ = 1075888080. Its totient is φ = 191268960.

The previous prime is 478172417. The next prime is 478172459. The reversal of 478172440 is 44271874.

It is a self number, because there is not a number n which added to its sum of digits gives 478172440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5977116 + ... + 5977195.

It is an arithmetic number, because the mean of its divisors is an integer number (67243005).

Almost surely, 2^478172440 is an apocalyptic number.

478172440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

478172440 is an abundant number, since it is smaller than the sum of its proper divisors (597715640).

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

478172440 is a wasteful number, since it uses less digits than its factorization.

478172440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11954322 (or 11954318 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 37.

The square root of 478172440 is about 21867.1543644801. The cubic root of 478172440 is about 781.9785622597.

The spelling of 478172440 in words is "four hundred seventy-eight million, one hundred seventy-two thousand, four hundred forty".