| 词条 | 888 (number) |
| 释义 |
| number = 888 }} 888 (eight hundred [and] eighty-eight) is the natural number following 887 and preceding 889. In mathematics888 is a repdigit (a number all of whose digits are equal),[1] and a strobogrammatic number (one that reads the same upside-down on a seven-segment calculator display).[2] 8883 = 700227072 is the smallest cube in which each digit occurs exactly three times,[3] and the only cube in which three distinct digits each occur three times.[4] 888 the smallest multiple of 24 whose digit sum is 24,[5] and as well as being divisible by its digit sum it is divisible by all of its digits.[6] 888 is a practical number, meaning that every positive integer up to 888 itself may be represented as a sum of distinct divisors of 888.[7] There are exactly 888 trees with four unlabeled and three labeled nodes,[8] exactly 888 seven-node undirected graphs without isolated vertices,[9] and exactly 888 non-alternating knots whose crossing number is 12.[10] Symbology and numerologyIn Christian numerology, the number 888 represents Jesus, or sometimes more specifically Christ the Redeemer. This representation may be justified either through gematria, by counting the letter values of the Greek transliteration of Jesus' name,[11] or as an opposing value to 666, the number of the beast.[12] In Chinese numerology, 888 has a different meaning, triple fortune, a strengthening of the meaning of the digit 8.[13] For this reason, addresses and phone numbers containing the digit sequence 888 are considered particularly lucky, and may command a premium because of it.[14] See also
References1. ^{{Cite OEIS|sequencenumber=A010785|name=Repdigit numbers, or numbers with repeated digits}} {{Integers|8}}2. ^{{Cite OEIS|sequencenumber=A018846|name=Strobogrammatic numbers: numbers that are the same upside down (using calculator-style numerals)}} 3. ^{{Cite OEIS|sequencenumber=A052071|name=a(n)^3 is the smallest cube whose digits occur with the same frequency n}} 4. ^{{citation|title=Number Gossip|first=Tanya|last=Khovanova|year=2008|publisher=Gathering for Gardner|arxiv=0804.2277|url=http://www.tanyakhovanova.com/publications/0804.2277.pdf|bibcode=2008arXiv0804.2277K}}. 5. ^{{Cite OEIS|sequencenumber=A002998|name=Smallest multiple of n whose digits sum to n}} 6. ^{{Cite OEIS|sequencenumber=A051004|name=Numbers divisible both by their individual digits and by the sum of their digits}} 7. ^Nombres pratiques (in French), Jeux et Mathématiques, Jean-Paul Davalan, retrieved 2013-01-31. 8. ^{{Cite OEIS|sequencenumber=A000269|name=Number of trees with n nodes, 3 of which are labeled}} 9. ^{{Cite OEIS|sequencenumber=A002494|name=Number of n-node graphs without isolated nodes}} 10. ^{{Cite OEIS|sequencenumber=A051763|name=Number of nonalternating knots with n crossings}} 11. ^{{citation|title=Numerology: Or What Pythagoras Wrought|series=MAA Spectrum|first=Underwood|last=Dudley|authorlink=Underwood Dudley|publisher=Cambridge University Press|year=1997|isbn=9780883855249|page=105|url=https://books.google.com/books?id=udptayxY2E8C&pg=PA105}}. 12. ^{{citation|title=Book Of Fate And Fortune: Numerology And Astrology|author=Cheiro|publisher=Orient Paperbacks|year=2005|isbn=9788122200461|page=60|url=https://books.google.com/books?id=464XH0LOCEgC&pg=PA60}}. 13. ^{{citation|title=Understanding Information Systems: What They Do and Why We Need Them|first=Lee|last=Ratzan|publisher=American Library Association|year=2004|isbn=9780838908686|page=202|url=https://books.google.com/books?id=lrdRYCRjUZUC&pg=PA202}}. 14. ^{{citation|title=Working Across Cultures|first=John|last=Hooker|publisher=Stanford University Press|year=2003|isbn=9780804748070|page=191|url=https://books.google.com/books?id=wJXo_mOXd1IC&pg=PA191}}. 1 : Integers |
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