78671344 has 20 divisors (see below), whose sum is σ = 152566624. Its totient is φ = 39299328.

The previous prime is 78671323. The next prime is 78671353. The reversal of 78671344 is 44317687.

It is a junction number, because it is equal to n+sod(n) for n = 78671297 and 78671306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27049 + ... + 29815.

Almost surely, 2^78671344 is an apocalyptic number.

It is an amenable number.

78671344 is a deficient number, since it is larger than the sum of its proper divisors (73895280).

78671344 is a wasteful number, since it uses less digits than its factorization.

78671344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4552 (or 4546 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 78671344 is about 8869.6868039407. The cubic root of 78671344 is about 428.4881901411.

The spelling of 78671344 in words is "seventy-eight million, six hundred seventy-one thousand, three hundred forty-four".