78825782 has 16 divisors (see below), whose sum is σ = 135359232. Its totient is φ = 33725160.

The previous prime is 78825781. The next prime is 78825809. The reversal of 78825782 is 28752887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78825781) 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 7 ways as a sum of consecutive naturals, for example, 4373 + ... + 13295.

It is an arithmetic number, because the mean of its divisors is an integer number (8459952).

Almost surely, 2^78825782 is an apocalyptic number.

78825782 is a deficient number, since it is larger than the sum of its proper divisors (56533450).

78825782 is a wasteful number, since it uses less digits than its factorization.

78825782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9563.

The product of its digits is 501760, while the sum is 47.

The square root of 78825782 is about 8878.3884798988. The cubic root of 78825782 is about 428.7683921425.

The spelling of 78825782 in words is "seventy-eight million, eight hundred twenty-five thousand, seven hundred eighty-two".