9878556 has 48 divisors (see below), whose sum is σ = 24940160. Its totient is φ = 3032640.

The previous prime is 9878527. The next prime is 9878563. The reversal of 9878556 is 6558789.

9878556 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 9⁵ + 8 + 7⁸ + 8⁷ + 5⁵ + 5⁹ + 6⁴ .

It is a congruent number.

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, 7851 + ... + 9021.

Almost surely, 2^9878556 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 9878556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12470080).

9878556 is an abundant number, since it is smaller than the sum of its proper divisors (15061604).

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

9878556 is a wasteful number, since it uses less digits than its factorization.

9878556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234 (or 1232 counting only the distinct ones).

The product of its digits is 604800, while the sum is 48.

The square root of 9878556 is about 3143.0170219075. The cubic root of 9878556 is about 214.5677705453.

The spelling of 9878556 in words is "nine million, eight hundred seventy-eight thousand, five hundred fifty-six".