Noventa
| 90 | |||||
|---|---|---|---|---|---|
| Cardinal | Noventa | ||||
| Ordinal | Nonagésimo,-a | ||||
| Factorización | 2 × 3² × 5 | ||||
| Sistemas de numeración | |||||
| Romana | XC | ||||
| Ática |
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| Jónica | ϙ´ o Ϟ´ | ||||
| China | 九十 | ||||
| China financiera | 玖 拾 | ||||
| Egipcia | ⋂⋂⋂⋂⋂⋂⋂⋂⋂ | ||||
| Armenia | Ղ | ||||
| Maya |
| ||||
| Cirílica | Ч | ||||
| India | ௯௰ | ||||
| Sistema binario | 1011010.y | ||||
| Sistema octal | 132 | ||||
| Sistema hexadecimal | 5A | ||||
| Como parámetro de una función | |||||
| Función φ de Euler | 24¿.t.y. | ||||
| Función divisor | 12 | ||||
| Función de Möbius | 0 | ||||
| Función de Mertens | -2 | ||||
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| Decenas | |||||
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| Lista de números | |||||
El noventa (90) es el número natural que sigue al ochenta y nueve y precede al noventa y uno.
Propiedades matemáticas
- Es un número compuesto, que tiene los siguientes factores propios: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30 y 45. Como la suma de sus factores es 144 > 90, se trata de un número abundante.
- Es un número de Harshad.
Ciencia
- 90 es el número atómico del torio.
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