78439168 has 36 divisors (see below), whose sum is σ = 159170368. Its totient is φ = 38568960.

The previous prime is 78439121. The next prime is 78439189. The reversal of 78439168 is 86193487.

It is a happy number.

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, 13105 + ... + 18127.

Almost surely, 2^78439168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78439168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79585184).

78439168 is an abundant number, since it is smaller than the sum of its proper divisors (80731200).

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

78439168 is an equidigital number, since it uses as much as digits as its factorization.

78439168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100 (or 5086 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 78439168 is about 8856.5889596390. The cubic root of 78439168 is about 428.0662546281.

The spelling of 78439168 in words is "seventy-eight million, four hundred thirty-nine thousand, one hundred sixty-eight".