998928 has 60 divisors (see below), whose sum is σ = 3198208. Its totient is φ = 285120.

The previous prime is 998927. The next prime is 998941. The reversal of 998928 is 829899.

998928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (998927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 513 + ... + 1503.

2⁹⁹⁸⁹²⁸ 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 998928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599104).

998928 is an abundant number, since it is smaller than the sum of its proper divisors (2199280).

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

998928 is a wasteful number, since it uses less digits than its factorization.

998928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012 (or 1003 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 998928 is about 999.4638562750. The cubic root of 998928 is about 99.9642538903.

The spelling of 998928 in words is "nine hundred ninety-eight thousand, nine hundred twenty-eight".