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198 (number) : ウィキペディア英語版 | 198 (number)
198 (one hundred () ninety-eight) is the natural number following 197 and preceding 199. ==In mathematics==
* 198 is an even number * 198 is an abundant number, as 270 is greater than 198 * 198 is a composite number * 198 is a Harshad number, divisible by the sum of its digits * 198 is a practical number * 198 is a self number * 198 is between the twin prime pair of 197 and 199 * 198 is a 67-gonal number
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