998800 has 60 divisors (see below), whose sum is σ = 2629296. Its totient is φ = 361600.

The previous prime is 998779. The next prime is 998813. The reversal of 998800 is 8899.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4287 + ... + 4513.

2⁹⁹⁸⁸⁰⁰ 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 998800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314648).

998800 is an abundant number, since it is smaller than the sum of its proper divisors (1630496).

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

998800 is a wasteful number, since it uses less digits than its factorization.

998800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 998800 is about 999.3998198919. The cubic root of 998800 is about 99.9599839893.

The spelling of 998800 in words is "nine hundred ninety-eight thousand, eight hundred".