8128 is the integer following 8127 and preceding 8129. It is most notable for being a perfect number (its divisors 1, 2, 4, 8, 16, 32, 64, 127, 254, 508, 1016, 2032, and 4064 add up to 8128), 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 8128. Also related to its being a perfect number, 8128 is a harmonic divisor number.
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| - 8128 (عدد) (ar)
- 8128 (αριθμός) (el)
- 8128 (number) (en)
- 8128 (it)
- 8128 (ja)
- 8128 (ko)
- 8128 (getal) (nl)
- 8128 (tal) (sv)
- 8128 (zh)
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| - 8128 (ثمانية الاف ومئتان وثماني وعشرون) هو عدد صحيح يلي العدد 3 ويسبق العدد 5 وهو عدد طبيعي موجب. (ar)
- Το 8128 (οκτώ χιλιάδες εκατόν είκοσι οκτώ) είναι σύνθετος αριθμός μετά το 8127 και πριν το 8129. (el)
- 8128(팔천백이십팔)은 보다 크고 보다 작은 자연수이다. (ko)
- 8128（八千百二十八、はっせんひゃくにじゅうはち）は、自然数また整数において、8127の次で8129の前の数である。 (ja)
- Ottomilacentoventotto (8128) è il numero naturale dopo 8127 e prima di 8129. (it)
- 8128 (eenentachtighonderdachtentwintig of achtduizendhonderachtentwintig) is een natuurlijk getal dat volgt op 8127 en dat voor het getal 8129 komt. 8128 is een van de eerste perfecte getallen die als zodanig erkend werden.Als een perfect getal is het verbonden met Mersennepriemgetal 127 (= 27 − 1), waarbij 26 · (27 − 1) gelijk is aan 8128. (nl)
- 8128 är det naturliga talet som följer och som följs av . (sv)
- 8128（八千一百二十八）是介于与之间的自然数。 (zh)
- 8128 is the integer following 8127 and preceding 8129. It is most notable for being a perfect number (its divisors 1, 2, 4, 8, 16, 32, 64, 127, 254, 508, 1016, 2032, and 4064 add up to 8128), 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 8128. Also related to its being a perfect number, 8128 is a harmonic divisor number. (en)
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| - 8128 (ثمانية الاف ومئتان وثماني وعشرون) هو عدد صحيح يلي العدد 3 ويسبق العدد 5 وهو عدد طبيعي موجب. (ar)
- Το 8128 (οκτώ χιλιάδες εκατόν είκοσι οκτώ) είναι σύνθετος αριθμός μετά το 8127 και πριν το 8129. (el)
- 8128 is the integer following 8127 and preceding 8129. It is most notable for being a perfect number (its divisors 1, 2, 4, 8, 16, 32, 64, 127, 254, 508, 1016, 2032, and 4064 add up to 8128), 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 8128. Also related to its being a perfect number, 8128 is a harmonic divisor number. Another consequence of 8128 being a perfect number is that it has the same prime factors as the sum of its divisors, its cototient is a power of two, and it is a harmonic seed number (though there are deficient and abundant numbers that share these properties). 8128 is the 127th triangular number, the 64th hexagonal number, a happy number, the eighth 292-gonal number, and the fourth 1356-gonal number, as well as the 43rd centered nonagonal number. (en)
- 8128(팔천백이십팔)은 보다 크고 보다 작은 자연수이다. (ko)
- 8128（八千百二十八、はっせんひゃくにじゅうはち）は、自然数また整数において、8127の次で8129の前の数である。 (ja)
- Ottomilacentoventotto (8128) è il numero naturale dopo 8127 e prima di 8129. (it)
- 8128 (eenentachtighonderdachtentwintig of achtduizendhonderachtentwintig) is een natuurlijk getal dat volgt op 8127 en dat voor het getal 8129 komt. 8128 is een van de eerste perfecte getallen die als zodanig erkend werden.Als een perfect getal is het verbonden met Mersennepriemgetal 127 (= 27 − 1), waarbij 26 · (27 − 1) gelijk is aan 8128. (nl)
- 8128 är det naturliga talet som följer och som följs av . (sv)
- 8128（八千一百二十八）是介于与之间的自然数。 (zh)
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