878042478 has 16 divisors (see below), whose sum is σ = 1848510720. Its totient is φ = 277276536.

The previous prime is 878042447. The next prime is 878042489. The reversal of 878042478 is 874240878.

It is a happy number.

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, 3850950 + ... + 3851177.

It is an arithmetic number, because the mean of its divisors is an integer number (115531920).

Almost surely, 2^878042478 is an apocalyptic number.

878042478 is an abundant number, since it is smaller than the sum of its proper divisors (970468242).

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

878042478 is a wasteful number, since it uses less digits than its factorization.

878042478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7702151.

The product of its (nonzero) digits is 802816, while the sum is 48.

The square root of 878042478 is about 29631.7815529205. The cubic root of 878042478 is about 957.5728901238.

The spelling of 878042478 in words is "eight hundred seventy-eight million, forty-two thousand, four hundred seventy-eight".