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8128 (number) - Definition and Overview |
| Related Words: M, Account, Act, Afterpiece, Aggregate, Army, Art, Article, Batch, Beat, Billion, Bit, Blood, Book |
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| Cardinal
| eight thousand one hundred [and] twenty-eight
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| Ordinal
| 8128th (eight thousand one hundred [and] twenty-eighth)
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| Factorization
| <math> 2^6 \cdot 127 <math>
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| Divisors
| 2, 4, 8, 11, 16, 22, 32, 44, 64, 127, 254, 508, 1,016, 2,032, 4,064
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| Roman numeral
| <math>\overline\mbox{VIII}\mbox{CXXVIII}<math>
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| Binary
| 1111111000000
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| Octal
| 17700
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| Duodecimal
| 4854
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| Hexadecimal
| 1FC0
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8,128 is the natural number following 8,127 and preceding 8,129.
It is most notable for being a perfect number, and one of the earliest numbers to be recognized as such. As a perfect number, it is tied to the Mersenne prime 127, 27 - 1, with 26 ( 27 - 1 ) yielding 8,128. Also related to its being a perfect number, 8,128 is a harmonic divisor number.
8,128 is the 127th triangular number, the 64th hexagonal number, the eighth 292-gonal number, and the fourth 1356-gonal number.
See also
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Example Usage of (number) |
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tattedgrl: @HarryHopkinson wow, you're brave putting your number on twitter like that. |
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ErMaus: Just finished my research paper, class number two out of five done for year as of tomorrow |
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addlepated: Power's out and utility phone number busy. Huh. |
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