78074878 has 8 divisors (see below), whose sum is σ = 133842672. Its totient is φ = 33460656.

The previous prime is 78074851. The next prime is 78074891. The reversal of 78074878 is 87847087.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2788375 + ... + 2788402.

It is an arithmetic number, because the mean of its divisors is an integer number (16730334).

Almost surely, 2^78074878 is an apocalyptic number.

78074878 is a deficient number, since it is larger than the sum of its proper divisors (55767794).

78074878 is a wasteful number, since it uses less digits than its factorization.

78074878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5576786.

The product of its (nonzero) digits is 702464, while the sum is 49.

The square root of 78074878 is about 8835.9989814395. The cubic root of 78074878 is about 427.4025458694.

The spelling of 78074878 in words is "seventy-eight million, seventy-four thousand, eight hundred seventy-eight".