Names of 728
| Nominal | 728 |
| Cardinal | seven hundred twenty-eight |
| Ordinal | 728th |
| This number as US currency | seven hundred twenty-eight dollars |
| Is 728 an odd number? | 728 is NOT an odd number |
| Is 728 an even number? | 728 is an even number |
| Is 728 a palindrome? | 728 is NOT a palindrome number |
| Is 728 a triangle number? | 728 is NOT a triangle number |
728 in other Bases
| Base 2 (Binary) | 10110110002 |
| Base 3 (Ternary) | 2222223 |
| Base 4 (Quaternary) | 231204 |
| Base 5 (Quinary) | 104035 |
| Base 6 (Senary) | 32126 |
| Base 8 (Octal) | 13308 |
| Base 12 (Duodecimal) | 50812 |
| Base 16 (Hexadecimal) | 2D816 |
| Base 20 (Vigesimal) | 1G820 |
Primes and Factors tests for 728
| Is 728 a Prime Number? | 728 is NOT a prime |
| Is 728 a perfect number? | 728 is NOT a perfect number |
| Is 728 a Mersenne Prime? | 728 is NOT a Mersenne prime |
| Is 728 a Fermat Prime? | 728 is NOT a Fermat prime |
| Is 728 a Fibonacci Prime? | 728 is NOT a Fibonacci prime |
| Is 728 a Partition Prime? | 728 is NOT a Partition prime |
| Is 728 a Pell Prime? | 728 is NOT a Pell prime |
| Prime Factors | Prime factors of 728 |
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728 in other Numerals
| 728 in Roman Numeral | DCCXXVIII |
| 728 in Chinese Numeral | 柒佰貳拾捌 |
| 728 in Egyptian Numeral | 𓍨𓎇𓐁 |
| 728 in Babylonian Numeral |   |
Roots and stuff for 728
| Is 728 a square number? | 728 is NOT a square number |
| Is 728 a cube number? | 728 is NOT a cube number |
| Square root of the number 728 | 26.981475126464 |
| Cube root of the number 728 | 8.9958828905508 |
Recreational math for 728
| Number 728 reversed | 827 |
| Sum of the digits | 17 |
| No of digits | 3 |