478138768 has 40 divisors (see below), whose sum is σ = 937395360. Its totient is φ = 236248320.

The previous prime is 478138751. The next prime is 478138769. The reversal of 478138768 is 867831874.

It is not an unprimeable number, because it can be changed into a prime (478138769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725223 + ... + 725881.

It is an arithmetic number, because the mean of its divisors is an integer number (23434884).

Almost surely, 2^478138768 is an apocalyptic number.

It is an amenable number.

478138768 is a deficient number, since it is larger than the sum of its proper divisors (459256592).

478138768 is a wasteful number, since it uses less digits than its factorization.

478138768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1129 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 52.

The square root of 478138768 is about 21866.3844290729. The cubic root of 478138768 is about 781.9602066777.

The spelling of 478138768 in words is "four hundred seventy-eight million, one hundred thirty-eight thousand, seven hundred sixty-eight".