878307872 has 90 divisors (see below), whose sum is σ = 1935638019. Its totient is φ = 392296320.

The previous prime is 878307853. The next prime is 878307893. The reversal of 878307872 is 278703878.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 3 ways, for example, as 15376 + 878292496 = 124^2 + 29636^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=20956.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 878307872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 28332497 + ... + 28332527.

Almost surely, 2^878307872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 878307872

878307872 is an abundant number, since it is smaller than the sum of its proper divisors (1057330147).

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

878307872 is an frugal number, since it uses more digits than its factorization.

878307872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 50.

The square root of 878307872 is about 29636.2594130906. The cubic root of 878307872 is about 957.6693579317.

Multiplying 878307872 by its sum of digits (50), we get a square (43915393600 = 209560²).

The spelling of 878307872 in words is "eight hundred seventy-eight million, three hundred seven thousand, eight hundred seventy-two".