198108 has 18 divisors (see below), whose sum is σ = 500864. Its totient is φ = 66024.

The previous prime is 198097. The next prime is 198109. The reversal of 198108 is 801891.

198108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198109) by changing a digit.

198108 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2716 + ... + 2787.

2¹⁹⁸¹⁰⁸ is an apocalyptic number.

198108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

198108 is an abundant number, since it is smaller than the sum of its proper divisors (302756).

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

198108 is a wasteful number, since it uses less digits than its factorization.

198108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513 (or 5508 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 198108 is about 445.0932486570. The cubic root of 198108 is about 58.2953621367.

Adding to 198108 its sum of digits (27), we get a triangular number (198135 = T₆₂₉).

Adding to 198108 its reverse (801891), we get a palindrome (999999).

The spelling of 198108 in words is "one hundred ninety-eight thousand, one hundred eight".