200 (number)

Natural number

| <- 199  | 200 |  201 ->

|
|

← 200 201 202 203 204 205 206 207 208 209 →

* List of numbers
* Integers

← 0 100 200 300 400 500 600 700 800 900 →

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, cc
Binary| 110010002
Ternary| 211023
Senary| 5326
Octal| 3108
Duodecimal| 14812
Hexadecimal| C816
Armenian| Մ
Hebrew| ר
Babylonian cuneiform| 𒐗⟪
Egyptian hieroglyph| 𓍣

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

## In mathematics

[edit]

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, and 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.[2] It is also a Harshad number. [3]

200 is an Achilles number.[4]

## References

[edit]

Look up two hundred in Wiktionary, the free dictionary.

1. ^ "Sloane's A000931 : Padovan sequence". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
2. ^ (sequence A192545 in the OEIS)
3. ^ Sloane, N. J. A. (ed.). "Sequence A005349 (Niven (or Harshad, or harshad) numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
4. ^ Sloane, N. J. A. (ed.). "Sequence A052486 (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.

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Integers

* 0
* 1
* 2
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* 5
* 6
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* 10
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* 90
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* 99

100s

* 100
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* 107
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* 110
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* 112
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* 120
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* 140
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* 190
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* 198
* 199

200s

* 200
* 201
* 202
* 203
* 204
* 205
* 206
* 207
* 208
* 209

* 210
* 211
* 212
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300s

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400s

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500s

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700s

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800s

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900s

* 900
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1000s

* 1000
* 1001
* 1023
* 1024
* 1089
* 1093
* 1105
* 1234
* 1289
* 1458
* 1510
* 1728
* 1729
* 1980
* 1987

* 2000
* 2016
* 2520
* 3000
* 3511
* 4000
* 4104
* 5000
* 5040
* 6000
* 6174
* 7000
* 7744
* 7825
* 8000
* 8128
* 8192
* 9000
* 9855
* 9999

* 10,000
* 16,807
* 20,000
* 30,000
* 40,000
* 50,000
* 60,000
* 64,079
* 65,535
* 65,536
* 65,537
* 70,000
* 80,000
* 90,000

* 100,000
* 142,857
* 144,000
* 1,000,000
* 10,000,000
* 43,112,609
* 100,000,000
* 1,000,000,000
* 2,147,483,647
* 4,294,967,295
* 10,000,000,000
* 100,000,000,000

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