Names of 21490
| Nominal | 21490 |
| Cardinal | twenty-one thousand four hundred ninety |
| Ordinal | 21,490th |
| This number as US currency | twenty-one thousand four hundred ninety dollars |
| Is 21490 an odd number? | 21490 is NOT an odd number |
| Is 21490 an even number? | 21490 is an even number |
| Is 21490 a palindrome? | 21490 is NOT a palindrome number |
| Is 21490 a triangle number? | 21490 is NOT a triangle number |
21490 in other Bases
| Base 2 (Binary) | 1010011111100102 |
| Base 3 (Ternary) | 10021102213 |
| Base 4 (Quaternary) | 110333024 |
| Base 5 (Quinary) | 11414305 |
| Base 6 (Senary) | 2432546 |
| Base 8 (Octal) | 517628 |
| Base 12 (Duodecimal) | 1052A12 |
| Base 16 (Hexadecimal) | 53F216 |
| Base 20 (Vigesimal) | 2DEA20 |
Primes and Factors tests for 21490
| Is 21490 a Prime Number? | 21490 is NOT a prime |
| Is 21490 a perfect number? | 21490 is NOT a perfect number |
| Is 21490 a Mersenne Prime? | 21490 is NOT a Mersenne prime |
| Is 21490 a Fermat Prime? | 21490 is NOT a Fermat prime |
| Is 21490 a Fibonacci Prime? | 21490 is NOT a Fibonacci prime |
| Is 21490 a Partition Prime? | 21490 is NOT a Partition prime |
| Is 21490 a Pell Prime? | 21490 is NOT a Pell prime |
| Prime Factors | Prime factors of 21490 |
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21490 in other Numerals
| 21490 in Roman Numeral | XXMCDXC |
| 21490 in Chinese Numeral | 貳萬壹仟肆佰玖拾 |
| 21490 in Egyptian Numeral | 𓂮𓆼𓍥𓎎 |
| 21490 in Babylonian Numeral |    |
Roots and stuff for 21490
| Is 21490 a square number? | 21490 is NOT a square number |
| Is 21490 a cube number? | 21490 is NOT a cube number |
| Square root of the number 21490 | 146.59467930317 |
| Cube root of the number 21490 | 27.802177080508 |
Recreational math for 21490
| Number 21490 reversed | 09412 |
| Sum of the digits | 16 |
| No of digits | 5 |