230 (number)
From Infogalactic: the planetary knowledge core
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Cardinal | two hundred thirty | |||
Ordinal | 230th (two hundred and thirtieth) |
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Factorization | 2 × 5 × 23 | |||
Roman numeral | CCXXX | |||
Binary | 111001102 | |||
Ternary | 221123 | |||
Quaternary | 32124 | |||
Quinary | 14105 | |||
Senary | 10226 | |||
Octal | 3468 | |||
Duodecimal | 17212 | |||
Hexadecimal | E616 | |||
Vigesimal | BA20 | |||
Base 36 | 6E36 |
230 (two hundred [and] thirty) is the natural number following 229 and preceding 231.
In mathematics
230 is:
- a composite number, with its divisors being 2, 5, 10, 23, 46, and 115.
- a sphenic number because it is the product of 3 primes.
- palindromic and a repdigit in bases 22 (AA22), 45 (5545), 114 (22114), 229 (11229)
- a Harshad number in bases 2, 6, 10, 12, 23 (and 16 other bases).
- a happy number.
- a nontotient since there is no integer with 230 coprimes below it.
- the sum of the coprime counts for the first 27 integers.
- the aliquot sum of both 454 and 52441.
- part of the 41-aliquot tree.
The aliquot sequence starting at 224 is: 224, 280, 440, 640, 890, 730, 602, 454, 230, 202, 104, 106, 56, 64, 63, 41, 1, 0.
There are 230 unique space groups describing all possible crystal symmetries.
In other fields
230 is:
- A common voltage in the European Union.
- The year A.D. 230 or 230 BC.
- +230 is the country code for Mauritius.
230 – 239
231 has its own article.
232 has its own article.
233 has its own article.
234 has its own article.
235 has its own article.
236 has its own article.
237 has its own article.
238 has its own article.
239 has its own article.
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