78871278 has 16 divisors (see below), whose sum is σ = 164601216. Its totient is φ = 25147320.

The previous prime is 78871267. The next prime is 78871283. The reversal of 78871278 is 87217887.

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 7 ways as a sum of consecutive naturals, for example, 285628 + ... + 285903.

It is an arithmetic number, because the mean of its divisors is an integer number (10287576).

Almost surely, 2^78871278 is an apocalyptic number.

78871278 is an abundant number, since it is smaller than the sum of its proper divisors (85729938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78871278 is a wasteful number, since it uses less digits than its factorization.

78871278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571559.

The product of its digits is 351232, while the sum is 48.

The square root of 78871278 is about 8880.9502869907. The cubic root of 78871278 is about 428.8508672519.

The spelling of 78871278 in words is "seventy-eight million, eight hundred seventy-one thousand, two hundred seventy-eight".