78823716 has 12 divisors (see below), whose sum is σ = 183922032. Its totient is φ = 26274568.

The previous prime is 78823643. The next prime is 78823741. The reversal of 78823716 is 61732887.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3284310 + ... + 3284333.

It is an arithmetic number, because the mean of its divisors is an integer number (15326836).

Almost surely, 2^78823716 is an apocalyptic number.

It is an amenable number.

78823716 is an abundant number, since it is smaller than the sum of its proper divisors (105098316).

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

78823716 is a wasteful number, since it uses less digits than its factorization.

78823716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6568650 (or 6568648 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 78823716 is about 8878.2721291927. The cubic root of 78823716 is about 428.7646461463.

The spelling of 78823716 in words is "seventy-eight million, eight hundred twenty-three thousand, seven hundred sixteen".