78876782 has 16 divisors (see below), whose sum is σ = 121441632. Its totient is φ = 38409120.

The previous prime is 78876769. The next prime is 78876793. The reversal of 78876782 is 28767887.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 9428 + ... + 15704.

It is an arithmetic number, because the mean of its divisors is an integer number (7590102).

Almost surely, 2^78876782 is an apocalyptic number.

78876782 is a deficient number, since it is larger than the sum of its proper divisors (42564850).

78876782 is a wasteful number, since it uses less digits than its factorization.

78876782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6443.

The product of its digits is 2107392, while the sum is 53.

The square root of 78876782 is about 8881.2601583334. The cubic root of 78876782 is about 428.8608427475.

The spelling of 78876782 in words is "seventy-eight million, eight hundred seventy-six thousand, seven hundred eighty-two".