Names of 20640
| Nominal | 20640 |
| Cardinal | twenty thousand six hundred forty |
| Ordinal | 20,640th |
| This number as US currency | twenty thousand six hundred forty dollars |
| Is 20640 an odd number? | 20640 is NOT an odd number |
| Is 20640 an even number? | 20640 is an even number |
| Is 20640 a palindrome? | 20640 is NOT a palindrome number |
| Is 20640 a triangle number? | 20640 is NOT a triangle number |
20640 in other Bases
| Base 2 (Binary) | 1010000101000002 |
| Base 3 (Ternary) | 10010221103 |
| Base 4 (Quaternary) | 110022004 |
| Base 5 (Quinary) | 11300305 |
| Base 6 (Senary) | 2353206 |
| Base 8 (Octal) | 502408 |
| Base 12 (Duodecimal) | BB4012 |
| Base 16 (Hexadecimal) | 50A016 |
| Base 20 (Vigesimal) | 2BC020 |
Primes and Factors tests for 20640
| Is 20640 a Prime Number? | 20640 is NOT a prime |
| Is 20640 a perfect number? | 20640 is NOT a perfect number |
| Is 20640 a Mersenne Prime? | 20640 is NOT a Mersenne prime |
| Is 20640 a Fermat Prime? | 20640 is NOT a Fermat prime |
| Is 20640 a Fibonacci Prime? | 20640 is NOT a Fibonacci prime |
| Is 20640 a Partition Prime? | 20640 is NOT a Partition prime |
| Is 20640 a Pell Prime? | 20640 is NOT a Pell prime |
| Prime Factors | Prime factors of 20640 |
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20640 in other Numerals
| 20640 in Roman Numeral | XXDCXL |
| 20640 in Chinese Numeral | 貳萬陸佰肆拾 |
| 20640 in Egyptian Numeral | 𓂮𓍧𓎉 |
| 20640 in Babylonian Numeral |   |
Roots and stuff for 20640
| Is 20640 a square number? | 20640 is NOT a square number |
| Is 20640 a cube number? | 20640 is NOT a cube number |
| Square root of the number 20640 | 143.66627996854 |
| Cube root of the number 20640 | 27.430679401483 |
Recreational math for 20640
| Number 20640 reversed | 04602 |
| Sum of the digits | 12 |
| No of digits | 5 |