478876138 has 16 divisors (see below), whose sum is σ = 790030080. Its totient is φ = 216316656.

The previous prime is 478876103. The next prime is 478876157. The reversal of 478876138 is 831678874.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194718 + ... + 197161.

It is an arithmetic number, because the mean of its divisors is an integer number (49376880).

Almost surely, 2^478876138 is an apocalyptic number.

478876138 is a deficient number, since it is larger than the sum of its proper divisors (311153942).

478876138 is a wasteful number, since it uses less digits than its factorization.

478876138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391941.

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

The square root of 478876138 is about 21883.2387456702. The cubic root of 478876138 is about 782.3619713873.

The spelling of 478876138 in words is "four hundred seventy-eight million, eight hundred seventy-six thousand, one hundred thirty-eight".