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  2. 27 (number) - Wikipedia

    en.wikipedia.org/wiki/27_(number)

    Twenty-seven is the cube of 3, or the 2nd tetration of 3: 2 3 = 3 3 = 3 × 3 × 3. It is divisible by the number of prime numbers below it . The first non-trivial decagonal number is 27. [1] 27 has an aliquot sum of 13 [2] (the sixth prime number) in the aliquot sequence (27, 13, 1, 0) of only one composite number, rooted in the 13-aliquot tree ...

  3. Numeral prefix - Wikipedia

    en.wikipedia.org/wiki/Numeral_prefix

    The same suffix may be used with more than one category of number, as for example the orginary numbers secondary and tertiary and the distributive numbers binary and ternary. For the hundreds, there are competing forms: Those in -gent- , from the original Latin, and those in -cent- , derived from centi- , etc. plus the prefixes for 1 through 9 .

  4. English numerals - Wikipedia

    en.wikipedia.org/wiki/English_numerals

    twenty-three point three eight billion Often, large numbers are written with (preferably non-breaking ) half-spaces or thin spaces separating the thousands (and, sometimes, with normal spaces or apostrophes ) instead of commas —to ensure that confusion is not caused in countries where a decimal comma is used.

  5. Latin numerals - Wikipedia

    en.wikipedia.org/wiki/Latin_Numerals

    Based on this series of numerals there is a series of adverbs: simpliciter 'simply, frankly', dupliciter 'doubly, ambiguously', tripliciter 'in three different ways' etc., as well as verbs such as duplicāre 'to double', triplicāre 'to triple', quadruplicāre 'to make four times as much', and so on.

  6. Wikipedia:Manual of Style/Dates and numbers - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Manual_of_Style/...

    Numbers in mathematical formulae are never spelled out (3 < π < ⁠ 22 / 7 ⁠ not three < pi < twenty-two sevenths), and "numbers as numbers" are rarely spelled out in other mathematical contexts (the first three primes are 2, 3, and 5 not the first three primes are two, three, and five; but zero-sum game and roots of unity).

  7. Zero-based numbering - Wikipedia

    en.wikipedia.org/wiki/Zero-based_numbering

    The four days before that Sunday are often referred to as "zero week". 24-hour clocks and the international standard ISO 8601 use 0 to denote the first (zeroth) hour of the day, consistent with using the 0 to denote the first (zeroth) minute of the hour and the first (zeroth) second of the minute.

  8. 127 (number) - Wikipedia

    en.wikipedia.org/wiki/127_(number)

    127 (one hundred [and] twenty-seven) is the natural number following 126 and preceding 128. It is also a prime number. It is also a prime number. In mathematics

  9. 28 (number) - Wikipedia

    en.wikipedia.org/wiki/28_(number)

    Twenty-eight is: An abbreviation for such years as 1928 and 2028. The number of Hebrew letters in Genesis 1:1, the first verse of the Bible. The number of wheels on a Lockheed C-5 Galaxy. In the code for international direct dial phone calls, +28 is unassigned. 028 is the ISO 3166-1 numeric three-digit country code for Antigua and Barbuda.