200 (number)
Natural number
From Wikipedia, the free encyclopedia
200 (two hundred) is the natural number following 199 and preceding 201.
| ||||
|---|---|---|---|---|
| Cardinal | two hundred | |||
| Ordinal | 200th (two hundredth) | |||
| Factorization | 23 × 52 | |||
| 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 | |||
In mathematics
200 is an abundant number,[1] as 265, the sum of its proper divisors, is greater than itself.[2]
The number appears in the Padovan sequence, preceded by 86, 114, and 151 (it is the sum of the first two of these).[3]
The sum of Euler's totient function φ(x) over the first twenty-five integers is 200.[4]
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.[5] It is also a Harshad number.[6]
200 is an Achilles number.[7]
