78756878 has 8 divisors (see below), whose sum is σ = 118174368. Its totient is φ = 39365424.

The previous prime is 78756863. The next prime is 78756907. The reversal of 78756878 is 87865787.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 5450 + ... + 13682.

It is an arithmetic number, because the mean of its divisors is an integer number (14771796).

Almost surely, 2^78756878 is an apocalyptic number.

78756878 is a deficient number, since it is larger than the sum of its proper divisors (39417490).

78756878 is a wasteful number, since it uses less digits than its factorization.

78756878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13018.

The product of its digits is 5268480, while the sum is 56.

The square root of 78756878 is about 8874.5071975857. The cubic root of 78756878 is about 428.6434225826.

The spelling of 78756878 in words is "seventy-eight million, seven hundred fifty-six thousand, eight hundred seventy-eight".