478178240 has 56 divisors (see below), whose sum is σ = 1141091952. Its totient is φ = 190863360.

The previous prime is 478178237. The next prime is 478178279. The reversal of 478178240 is 42871874.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181412 + ... + 184028.

It is an arithmetic number, because the mean of its divisors is an integer number (20376642).

Almost surely, 2^478178240 is an apocalyptic number.

478178240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478178240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570545976).

478178240 is an abundant number, since it is smaller than the sum of its proper divisors (662913712).

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

478178240 is a wasteful number, since it uses less digits than its factorization.

478178240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205 (or 3195 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 41.

The square root of 478178240 is about 21867.2869830713. The cubic root of 478178240 is about 781.9817239206.

The spelling of 478178240 in words is "four hundred seventy-eight million, one hundred seventy-eight thousand, two hundred forty".