878838556 has 12 divisors (see below), whose sum is σ = 1604835792. Its totient is φ = 420314048.

The previous prime is 878838547. The next prime is 878838589. The reversal of 878838556 is 655838878.

It is a self number, because there is not a number n which added to its sum of digits gives 878838556.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4776205 + ... + 4776388.

It is an arithmetic number, because the mean of its divisors is an integer number (133736316).

Almost surely, 2^878838556 is an apocalyptic number.

It is an amenable number.

878838556 is a deficient number, since it is larger than the sum of its proper divisors (725997236).

878838556 is a wasteful number, since it uses less digits than its factorization.

878838556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9552620 (or 9552618 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 58.

The square root of 878838556 is about 29645.2113502333. The cubic root of 878838556 is about 957.8621974809.

The spelling of 878838556 in words is "eight hundred seventy-eight million, eight hundred thirty-eight thousand, five hundred fifty-six".