478138944 has 28 divisors (see below), whose sum is σ = 1265076464. Its totient is φ = 159379584.

The previous prime is 478138879. The next prime is 478138981. The reversal of 478138944 is 449831874.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 478138893 and 478138902.

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, 1244962 + ... + 1245345.

Almost surely, 2^478138944 is an apocalyptic number.

It is an amenable number.

478138944 is an abundant number, since it is smaller than the sum of its proper divisors (786937520).

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

478138944 is a wasteful number, since it uses less digits than its factorization.

478138944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490322 (or 2490312 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 478138944 is about 21866.3884535147. The cubic root of 478138944 is about 781.9603026227.

The spelling of 478138944 in words is "four hundred seventy-eight million, one hundred thirty-eight thousand, nine hundred forty-four".