Names of 20998
| Nominal | 20998 |
| Cardinal | twenty thousand nine hundred ninety-eight |
| Ordinal | 20,998th |
| This number as US currency | twenty thousand nine hundred ninety-eight dollars |
| Is 20998 an odd number? | 20998 is NOT an odd number |
| Is 20998 an even number? | 20998 is an even number |
| Is 20998 a palindrome? | 20998 is NOT a palindrome number |
| Is 20998 a triangle number? | 20998 is NOT a triangle number |
20998 in other Bases
| Base 2 (Binary) | 1010010000001102 |
| Base 3 (Ternary) | 10012102013 |
| Base 4 (Quaternary) | 110200124 |
| Base 5 (Quinary) | 11324435 |
| Base 6 (Senary) | 2411146 |
| Base 8 (Octal) | 510068 |
| Base 12 (Duodecimal) | 1019A12 |
| Base 16 (Hexadecimal) | 520616 |
| Base 20 (Vigesimal) | 2C9I20 |
Primes and Factors tests for 20998
| Is 20998 a Prime Number? | 20998 is NOT a prime |
| Is 20998 a perfect number? | 20998 is NOT a perfect number |
| Is 20998 a Mersenne Prime? | 20998 is NOT a Mersenne prime |
| Is 20998 a Fermat Prime? | 20998 is NOT a Fermat prime |
| Is 20998 a Fibonacci Prime? | 20998 is NOT a Fibonacci prime |
| Is 20998 a Partition Prime? | 20998 is NOT a Partition prime |
| Is 20998 a Pell Prime? | 20998 is NOT a Pell prime |
| Prime Factors | Prime factors of 20998 |
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20998 in other Numerals
| 20998 in Roman Numeral | XXCMXCVIII |
| 20998 in Chinese Numeral | 貳萬玖佰玖拾捌 |
| 20998 in Egyptian Numeral | 𓂮𓍪𓎎𓐁 |
| 20998 in Babylonian Numeral |    |
Roots and stuff for 20998
| Is 20998 a square number? | 20998 is NOT a square number |
| Is 20998 a cube number? | 20998 is NOT a cube number |
| Square root of the number 20998 | 144.90686664199 |
| Cube root of the number 20998 | 27.58836588706 |
Recreational math for 20998
| Number 20998 reversed | 89902 |
| Sum of the digits | 28 |
| No of digits | 5 |