878540 has 48 divisors (see below), whose sum is σ = 2069760. Its totient is φ = 311040.

The previous prime is 878539. The next prime is 878551. The reversal of 878540 is 45878.

It is a junction number, because it is equal to n+sod(n) for n = 878497 and 878506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8006 + ... + 8114.

It is an arithmetic number, because the mean of its divisors is an integer number (43120).

2⁸⁷⁸⁵⁴⁰ 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 878540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1034880).

878540 is an abundant number, since it is smaller than the sum of its proper divisors (1191220).

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

878540 is a wasteful number, since it uses less digits than its factorization.

878540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 878540 is about 937.3046463130. The cubic root of 878540 is about 95.7753717983.

The spelling of 878540 in words is "eight hundred seventy-eight thousand, five hundred forty".