78968392 has 16 divisors (see below), whose sum is σ = 153171900. Its totient is φ = 38122560.

The previous prime is 78968387. The next prime is 78968399. The reversal of 78968392 is 29386987.

It can be written as a sum of positive squares in 2 ways, for example, as 78960996 + 7396 = 8886^2 + 86^2 .

It is not an unprimeable number, because it can be changed into a prime (78968399) by changing a digit.

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, 169959 + ... + 170422.

Almost surely, 2^78968392 is an apocalyptic number.

It is an amenable number.

78968392 is a deficient number, since it is larger than the sum of its proper divisors (74203508).

78968392 is a wasteful number, since it uses less digits than its factorization.

78968392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340416 (or 340412 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 78968392 is about 8886.4161505075. The cubic root of 78968392 is about 429.0268093794.

The spelling of 78968392 in words is "seventy-eight million, nine hundred sixty-eight thousand, three hundred ninety-two".