Names of 815
| Nominal | 815 |
| Cardinal | eight hundred fifteen |
| Ordinal | 815th |
| This number as US currency | eight hundred fifteen dollars |
| Is 815 an odd number? | 815 is an odd number |
| Is 815 an even number? | 815 is NOT an even number |
| Is 815 a palindrome? | 815 is NOT a palindrome number |
| Is 815 a triangle number? | 815 is NOT a triangle number |
815 in other Bases
| Base 2 (Binary) | 11001011112 |
| Base 3 (Ternary) | 10100123 |
| Base 4 (Quaternary) | 302334 |
| Base 5 (Quinary) | 112305 |
| Base 6 (Senary) | 34356 |
| Base 8 (Octal) | 14578 |
| Base 12 (Duodecimal) | 57B12 |
| Base 16 (Hexadecimal) | 32F16 |
| Base 20 (Vigesimal) | 20F20 |
Primes and Factors tests for 815
| Is 815 a Prime Number? | 815 is NOT a prime |
| Is 815 a perfect number? | 815 is NOT a perfect number |
| Is 815 a Mersenne Prime? | 815 is NOT a Mersenne prime |
| Is 815 a Fermat Prime? | 815 is NOT a Fermat prime |
| Is 815 a Fibonacci Prime? | 815 is NOT a Fibonacci prime |
| Is 815 a Partition Prime? | 815 is NOT a Partition prime |
| Is 815 a Pell Prime? | 815 is NOT a Pell prime |
| Prime Factors | Prime factors of 815 |
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815 in other Numerals
| 815 in Roman Numeral | DCCCXV |
| 815 in Chinese Numeral | 捌佰壹拾伍 |
| 815 in Egyptian Numeral | 𓍩𓎆𓏾 |
| 815 in Babylonian Numeral |   |
Roots and stuff for 815
| Is 815 a square number? | 815 is NOT a square number |
| Is 815 a cube number? | 815 is NOT a cube number |
| Square root of the number 815 | 28.54820484724 |
| Cube root of the number 815 | 9.340838634276 |
Recreational math for 815
| Number 815 reversed | 518 |
| Sum of the digits | 14 |
| No of digits | 3 |