998432 has 24 divisors (see below), whose sum is σ = 2016252. Its totient is φ = 486400.

The previous prime is 998429. The next prime is 998443. The reversal of 998432 is 234899.

It can be written as a sum of positive squares in 2 ways, for example, as 633616 + 364816 = 796^2 + 604^2 .

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 998392 and 998401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932 + ... + 1692.

2⁹⁹⁸⁴³² 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 998432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008126).

998432 is an abundant number, since it is smaller than the sum of its proper divisors (1017820).

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

998432 is a wasteful number, since it uses less digits than its factorization.

998432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 804 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 998432 is about 999.2156924308. The cubic root of 998432 is about 99.9477059915.

The spelling of 998432 in words is "nine hundred ninety-eight thousand, four hundred thirty-two".