198 (number)

← 197 198 199 →
← 190 191 192 193 194 195 196 197 198 199 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	one hundred ninety-eight
Ordinal	198th (one hundred ninety-eighth)
Factorization	2 × 32 × 11
Greek numeral	ΡϞΗ´
Roman numeral	CXCVIII, cxcviii
Binary	110001102
Ternary	211003
Senary	5306
Octal	3068
Duodecimal	14612
Hexadecimal	C616

198 (one hundred [and] ninety-eight) is the natural number following 197 and preceding 199.

In mathematics

• 198 is the smallest number that can be written as a sum of four positive squares in ten different ways. ^{[1] [2]}
• 198 is a Pell–Lucas number. Its corresponding Pell number is 70. ^[3]

References

1. "198". NumberADay. Mathematical Association of America. 2012-10-25. Retrieved 2023-06-04.
2. "A025366 - OEIS". oeis.org. Retrieved 2023-06-04.
3. "A002203 - OEIS". oeis.org. Retrieved 2023-06-04.