878820 has 48 divisors (see below), whose sum is σ = 2502528. Its totient is φ = 230400.

The previous prime is 878797. The next prime is 878821. The reversal of 878820 is 28878.

878820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (878821) by changing a digit.

878820 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5745 + ... + 5895.

It is an arithmetic number, because the mean of its divisors is an integer number (52136).

2⁸⁷⁸⁸²⁰ 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 878820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251264).

878820 is an abundant number, since it is smaller than the sum of its proper divisors (1623708).

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

878820 is a wasteful number, since it uses less digits than its factorization.

878820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 878820 is about 937.4539988714. The cubic root of 878820 is about 95.7855455926.

The spelling of 878820 in words is "eight hundred seventy-eight thousand, eight hundred twenty".