### Miscellaneous & Conversions For 18

 Text Eightteen Roman Numeral: 18 XVIII RGB Colour (# 012 or #000012)

 Decimal / Number 18 Binary 10010 Ternary 200 Hexadecimal (Hex) 0x12 Quaternary 102 Quinary 33 Senary (Heximal) 30 Octal 22 Duodecimal (Dozenal) 16

### Mathematics

 Prime Factors: 2 x 3 x 3 = 18 Factorial: 18! 6402373705728000 Harshad Number: 18 True Triangular Number Of 18 171 Square Root: √18 4.24264068712 Cube Root (Root 3): 3√18 2.62074139421 Tesseract Root (Root 4): 4√18 2.05976714391 Quintal / nth Root. (Root 5) 5√18 1.78260245797 ¾ Root 8.73885189073 Fibonnaci # 18 2584 Recipricol 1/ 18 0.0555555555556 Quarter 1/4 4.50 or 4.50/18 Half 1/2 9 or 9/18 Third 1/3 6 or 6/18
18 PowersValue
182324
1835,832
184104,976
1851,889,568
 2 3 6 9 18

### Trigonometry For Eightteen (18)

The most hated math is usually trigonometry amongst students. Sine, Cosine, Tangent. Only actual values, are shown. If the value is zero, I will not list it here.

TrigonometryValue
Sine-0.750987246772
Hyperbolic Sine32829984.5687
Inverse Hyperbolic Sine3.58428965186
Cosine0.660316708244
Inverse Hyperbolic Cosine3.58274643892
Tangent-1.13731371234
Arc Tangent1.51529782155

2% Fibonacci
38% Numbers
20% Binary