Names of 28009
| Nominal | 28009 |
| Cardinal | twenty-eight thousand nine |
| Ordinal | 28,009th |
| This number as US currency | twenty-eight thousand nine dollars |
| Is 28009 an odd number? | 28009 is an odd number |
| Is 28009 an even number? | 28009 is NOT an even number |
| Is 28009 a palindrome? | 28009 is NOT a palindrome number |
| Is 28009 a triangle number? | 28009 is NOT a triangle number |
28009 in other Bases
| Base 2 (Binary) | 1101101011010012 |
| Base 3 (Ternary) | 11021021013 |
| Base 4 (Quaternary) | 123112214 |
| Base 5 (Quinary) | 13440145 |
| Base 6 (Senary) | 3334016 |
| Base 8 (Octal) | 665518 |
| Base 12 (Duodecimal) | 1426112 |
| Base 16 (Hexadecimal) | 6D6916 |
| Base 20 (Vigesimal) | 3A0920 |
Primes and Factors tests for 28009
| Is 28009 a Prime Number? | 28009 is NOT a prime |
| Is 28009 a perfect number? | 28009 is NOT a perfect number |
| Is 28009 a Mersenne Prime? | 28009 is NOT a Mersenne prime |
| Is 28009 a Fermat Prime? | 28009 is NOT a Fermat prime |
| Is 28009 a Fibonacci Prime? | 28009 is NOT a Fibonacci prime |
| Is 28009 a Partition Prime? | 28009 is NOT a Partition prime |
| Is 28009 a Pell Prime? | 28009 is NOT a Pell prime |
| Prime Factors | Prime factors of 28009 |
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28009 in other Numerals
| 28009 in Roman Numeral | XXVMMMIX |
| 28009 in Chinese Numeral | 貳萬捌仟玖 |
| 28009 in Egyptian Numeral | 𓂮𓇃𓐂 |
| 28009 in Babylonian Numeral |    |
Roots and stuff for 28009
| Is 28009 a square number? | 28009 is NOT a square number |
| Is 28009 a cube number? | 28009 is NOT a cube number |
| Square root of the number 28009 | 167.35889578986 |
| Cube root of the number 28009 | 30.369142858415 |
Recreational math for 28009
| Number 28009 reversed | 90082 |
| Sum of the digits | 19 |
| No of digits | 5 |