198522 has 24 divisors (see below), whose sum is σ = 442260. Its totient is φ = 64320.

The previous prime is 198503. The next prime is 198529. The reversal of 198522 is 225891.

It can be written as a sum of positive squares in 2 ways, for example, as 145161 + 53361 = 381^2 + 231^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (198529) by changing a digit.

198522 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 11 ways as a sum of consecutive naturals, for example, 604 + ... + 872.

2¹⁹⁸⁵²² is an apocalyptic number.

198522 is an abundant number, since it is smaller than the sum of its proper divisors (243738).

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

198522 is a wasteful number, since it uses less digits than its factorization.

198522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 315 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 198522 is about 445.5580770225. The cubic root of 198522 is about 58.3359418335.

The spelling of 198522 in words is "one hundred ninety-eight thousand, five hundred twenty-two".