9998544 has 40 divisors (see below), whose sum is σ = 26223520. Its totient is φ = 3282048.

The previous prime is 9998543. The next prime is 9998557. The reversal of 9998544 is 4458999.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9998493 and 9998502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1662 + ... + 4770.

It is an arithmetic number, because the mean of its divisors is an integer number (655588).

Almost surely, 2^9998544 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 9998544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13111760).

9998544 is an abundant number, since it is smaller than the sum of its proper divisors (16224976).

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

9998544 is a wasteful number, since it uses less digits than its factorization.

9998544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187 (or 3181 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 9998544 is about 3162.0474379743. The cubic root of 9998544 is about 215.4330123060.

The spelling of 9998544 in words is "nine million, nine hundred ninety-eight thousand, five hundred forty-four".