200 (number)

Last updated
199 200 201
Cardinal two hundred
Ordinal 200th
(two hundredth)
Factorization 23 × 52
Divisors 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200
Greek numeral Σ´
Roman numeral CC
Binary 110010002
Ternary 211023
Senary 5326
Octal 3108
Duodecimal 14812
Hexadecimal C816
Armenian Մ
Hebrew ר
Babylonian cuneiform 𒐗⟪

200 (two hundred) is the natural number following 199 and preceding 201.

In mathematics

200 is an abundant number, as 265, the sum of its proper divisors, is greater than itself.

The number appears in the Padovan sequence, preceded by 86, 114, 151 (it is the sum of the first two of these). [1]

The sum of Euler's totient function φ(x) over the first twenty-five integers is 200.

200 is the smallest base 10 unprimeable number – it cannot be turned into a prime number by changing just one of its digits to any other digit. It is also a Harshad number.

200 is an Achilles number. [2]

Two hundred is also:

Related Research Articles

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55 (fifty-five) is the natural number following 54 and preceding 56.

65 (sixty-five) is the natural number following 64 and preceding 66.

114 is the natural number following 113 and preceding 115.

100 or one hundred is the natural number following 99 and preceding 101.

1000 or one thousand is the natural number following 999 and preceding 1001. In most English-speaking countries, it can be written with or without a comma or sometimes a period separating the thousands digit: 1,000.

300 is the natural number following 299 and preceding 301.

400 is the natural number following 399 and preceding 401.

700 is the natural number following 699 and preceding 701.

600 is the natural number following 599 and preceding 601.

800 is the natural number following 799 and preceding 801.

2000 is a natural number following 1999 and preceding 2001.

10,000 is the natural number following 9,999 and preceding 10,001.

135 is the natural number following 134 and preceding 136.

<span class="mw-page-title-main">1,000,000</span> Natural number

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181 is the natural number following 180 and preceding 182.

189 is the natural number following 188 and preceding 190.

202 is the natural number following 201 and preceding 203.

References

  1. "Sloane's A000931 : Padovan sequence". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
  2. Sloane, N. J. A. (ed.). "SequenceA052486(Achilles numbers - powerful but imperfect: if n = Product(p_i^e_i) then all e_i > 1 (i.e., powerful), but the highest common factor of the e_i is 1, i.e., not a perfect power)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  3. North West 200 http://www.northwest200.org/ Archived 2007-03-09 at the Wayback Machine