Neha Patil (Editor)

230 (number)

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230
  
231 →

Factorization
  
2 × 5 × 23

Binary
  
111001102

Cardinal
  
two hundred thirty

Roman numeral
  
CCXXX

Ordinal
  
230th (two hundred and thirtieth)

230 (two hundred [and] thirty) is the natural number following 229 and preceding 231.

Contents

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.

    • References

    230 (number) Wikipedia
    (Text) CC BY-SA