72
Everything about the number 72 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 72
| Nominal | 72 |
| Cardinal | seventy-two |
| Ordinal | 72nd |
| This number as US currency | seventy-two dollars |
Properties (and some facts) of 72
| Is 72 an odd number? | 72 is not an odd number |
| Is 72 an even number? | 72 is an even number |
| Is 72 a palindrome? | 72 is not a palindrome |
| Is 72 a triangle number? | 72 is not a triangle number |
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72 in other bases
| Base 2 (Binary) | 1001000 |
| Base 3 (Ternary) | 2200 |
| Base 4 (Quaternary) | 1020 |
| Base 5 (Quinary) | 242 |
| Base 6 (Senary) | 200 |
| Base 8 (Octal) | 110 |
| Base 12 (Duodecimal) | 60 |
| Base 16 (Hexadecimal) | 48 |
| Base 20 (Vigesimal) | 3C |
Primes and factors tests for 72
| Is 72 a prime number? | 72 is not a prime number |
| Is 72 a perfect number? | 72 is not a perfect number |
| Is 72 a Mersenne prime? | 72 is not a Mersenne prime |
| Is 72 a Fermat prime? | 72 is not a Fermat prime |
| Is 72 a Fibonacci prime? | 72 is not a Fibonacci prime |
| Is 72 a partition prime? | 72 is not a partition prime |
| Is 72 a Pell prime? | 72 is not a Pell prime |
| Prime Factors | Prime factors of 72 |
72 in other numeral systems
| 72 in Roman numerals | LXXII |
| 72 in Chinese numerals | 柒拾貳 |
| 72 in Babylonian numerals |   |
| 72 in Egyptian numerals | 𓎌𓏻 |
Roots and squares for 72
| Is 72 a square number? | 72 is not a square number |
| Is 72 a cube number? | 72 is not a cube number |
| Square root of 72 | 8.4852813742386 |
| Cube root of 72 | 4.1601676461038 |
Recreational math for 72
| Number 72 reversed | 27 |
| Sum of the digits | 9 |
| Number of digits | 2 |
Arithmetic tables for 72
Other pages about 72
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