198536 has 32 divisors (see below), whose sum is σ = 423360. Its totient is φ = 86592.

The previous prime is 198533. The next prime is 198553. The reversal of 198536 is 635891.

It is not an unprimeable number, because it can be changed into a prime (198533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2351 + ... + 2433.

It is an arithmetic number, because the mean of its divisors is an integer number (13230).

2¹⁹⁸⁵³⁶ 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 198536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211680).

198536 is an abundant number, since it is smaller than the sum of its proper divisors (224824).

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

198536 is a wasteful number, since it uses less digits than its factorization.

198536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 121 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 198536 is about 445.5737873798. The cubic root of 198536 is about 58.3373131072.

The spelling of 198536 in words is "one hundred ninety-eight thousand, five hundred thirty-six".