478138332 has 96 divisors (see below), whose sum is σ = 1311916032. Its totient is φ = 132705216.

The previous prime is 478138303. The next prime is 478138333. The reversal of 478138332 is 233831874.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478138333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 643153 + ... + 643895.

It is an arithmetic number, because the mean of its divisors is an integer number (13665792).

Almost surely, 2^478138332 is an apocalyptic number.

478138332 is a gapful number since it is divisible by the number (42) 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 478138332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (655958016).

478138332 is an abundant number, since it is smaller than the sum of its proper divisors (833777700).

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

478138332 is a wasteful number, since it uses less digits than its factorization.

478138332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967 (or 965 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 478138332 is about 21866.3744594297. The cubic root of 478138332 is about 781.9599689958.

The spelling of 478138332 in words is "four hundred seventy-eight million, one hundred thirty-eight thousand, three hundred thirty-two".