78993716 has 48 divisors (see below), whose sum is σ = 151139520. Its totient is φ = 36000000.

The previous prime is 78993683. The next prime is 78993727. The reversal of 78993716 is 61739987.

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 15 ways as a sum of consecutive naturals, for example, 314591 + ... + 314841.

It is an arithmetic number, because the mean of its divisors is an integer number (3148740).

Almost surely, 2^78993716 is an apocalyptic number.

78993716 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

78993716 is a deficient number, since it is larger than the sum of its proper divisors (72145804).

78993716 is a wasteful number, since it uses less digits than its factorization.

78993716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 414 counting only the distinct ones).

The product of its digits is 571536, while the sum is 50.

The square root of 78993716 is about 8887.8409076671. The cubic root of 78993716 is about 429.0726653371.

The spelling of 78993716 in words is "seventy-eight million, nine hundred ninety-three thousand, seven hundred sixteen".