9878868 has 96 divisors (see below), whose sum is σ = 27659520. Its totient is φ = 3041280.

The previous prime is 9878867. The next prime is 9878893. The reversal of 9878868 is 8688789.

It is a super-2 number, since 2×9878868² = 195184065922848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9878861) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 101796 + ... + 101892.

It is an arithmetic number, because the mean of its divisors is an integer number (288120).

Almost surely, 2^9878868 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 9878868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13829760).

9878868 is an abundant number, since it is smaller than the sum of its proper divisors (17780652).

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

9878868 is a wasteful number, since it uses less digits than its factorization.

9878868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 166 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The square root of 9878868 is about 3143.0666553543. The cubic root of 9878868 is about 214.5700294598.

The spelling of 9878868 in words is "nine million, eight hundred seventy-eight thousand, eight hundred sixty-eight".