9878144 has 32 divisors (see below), whose sum is σ = 19823700. Its totient is φ = 4902912.

The previous prime is 9878129. The next prime is 9878147. The reversal of 9878144 is 4418789.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9684544 + 193600 = 3112^2 + 440^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (9878147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29144 + ... + 29480.

Almost surely, 2^9878144 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 9878144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9911850).

9878144 is an abundant number, since it is smaller than the sum of its proper divisors (9945556).

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

9878144 is a wasteful number, since it uses less digits than its factorization.

9878144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 568 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 9878144 is about 3142.9514791037. The cubic root of 9878144 is about 214.5647875469.

The spelling of 9878144 in words is "nine million, eight hundred seventy-eight thousand, one hundred forty-four".