989828 has 48 divisors (see below), whose sum is σ = 2177280. Its totient is φ = 384384.

The previous prime is 989827. The next prime is 989831. The reversal of 989828 is 828989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18650 + ... + 18702.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2⁹⁸⁹⁸²⁸ 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 989828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088640).

989828 is an abundant number, since it is smaller than the sum of its proper divisors (1187452).

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

989828 is a wasteful number, since it uses less digits than its factorization.

989828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 114 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 989828 is about 994.9010001000. The cubic root of 989828 is about 99.6597771300.

The spelling of 989828 in words is "nine hundred eighty-nine thousand, eight hundred twenty-eight".