78982878 has 16 divisors (see below), whose sum is σ = 170117136. Its totient is φ = 24302400.

The previous prime is 78982859. The next prime is 78982907. The reversal of 78982878 is 87828987.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506223 + ... + 506378.

It is an arithmetic number, because the mean of its divisors is an integer number (10632321).

Almost surely, 2^78982878 is an apocalyptic number.

78982878 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

78982878 is an abundant number, since it is smaller than the sum of its proper divisors (91134258).

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

78982878 is a wasteful number, since it uses less digits than its factorization.

78982878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012619.

The product of its digits is 3612672, while the sum is 57.

The square root of 78982878 is about 8887.2311773690. The cubic root of 78982878 is about 429.0530414038.

The spelling of 78982878 in words is "seventy-eight million, nine hundred eighty-two thousand, eight hundred seventy-eight".