198308 has 12 divisors (see below), whose sum is σ = 378672. Its totient is φ = 90120.

The previous prime is 198301. The next prime is 198313. The reversal of 198308 is 803891.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (198301) by changing a digit.

198308 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 2210 + ... + 2297.

It is an arithmetic number, because the mean of its divisors is an integer number (31556).

2¹⁹⁸³⁰⁸ is an apocalyptic number.

It is an amenable number.

198308 is a deficient number, since it is larger than the sum of its proper divisors (180364).

198308 is a wasteful number, since it uses less digits than its factorization.

198308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4522 (or 4520 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 198308 is about 445.3178640028. The cubic root of 198308 is about 58.3149729065.

The spelling of 198308 in words is "one hundred ninety-eight thousand, three hundred eight".