78913216 has 14 divisors (see below), whose sum is σ = 156593540. Its totient is φ = 39456576.

The previous prime is 78913189. The next prime is 78913217. The reversal of 78913216 is 61231987.

It is not an unprimeable number, because it can be changed into a prime (78913217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616446 + ... + 616573.

Almost surely, 2^78913216 is an apocalyptic number.

It is an amenable number.

78913216 is a deficient number, since it is larger than the sum of its proper divisors (77680324).

78913216 is a wasteful number, since it uses less digits than its factorization.

78913216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233031 (or 1233021 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 78913216 is about 8883.3110944062. The cubic root of 78913216 is about 428.9268643336.

The spelling of 78913216 in words is "seventy-eight million, nine hundred thirteen thousand, two hundred sixteen".