78934448 has 20 divisors (see below), whose sum is σ = 155529480. Its totient is φ = 38797824.

The previous prime is 78934447. The next prime is 78934481. The reversal of 78934448 is 84443987.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (78934447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40865 + ... + 42752.

It is an arithmetic number, because the mean of its divisors is an integer number (7776474).

Almost surely, 2^78934448 is an apocalyptic number.

It is an amenable number.

78934448 is a deficient number, since it is larger than the sum of its proper divisors (76595032).

78934448 is a wasteful number, since it uses less digits than its factorization.

78934448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83684 (or 83678 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The square root of 78934448 is about 8884.5060639295. The cubic root of 78934448 is about 428.9653291984.

The spelling of 78934448 in words is "seventy-eight million, nine hundred thirty-four thousand, four hundred forty-eight".