Numbers 90,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

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90,000

[Math.]  2022652202+2022562202 = 636022 = 4,045,214,404 and 2022652202–2022562202 = 3002 = 90000 & 2042832002+2002382402 = 636022 and 2042832002–2002382402 = 63602 = 40,449,600.

[Math.]  Sum of the first 24 cube numbers:

13+23+33+…+223+233+243 = 90,000 = (1+2+3+…+22+23+24)2 = 3002.

[Math.]  Sum (in degrees) of all internal angles of a 502-side polygon.

90,003

[Math.]

1×8+1 = 9

12×8+2 = 98

123×8+3 = 987

1,234×8+4 = 9,876

12,345×8+5 = 98,765

123,456×8+6 = 987,654

1,234,567×8+7 = 9,876,543

12,345,678×8+8 = 98,765,432

123,456,789×8+9 = 987,654,321

1,234,567,890×8+90 = 9,876,543,210

(start of a new cycle)

12,345,678,901×8+901 = 98,765,432,109

123,456,789,012×8+9,002 = 987,654,321,098

1,234,567,890,123×8+90,003 = 9,876,543,210,987

12,345,678,901,234×8+900,004 = 98,765,432,109,876

123,456,789,012,345×8+9,000,005 = 987,654,321,098,765

1,234,567,890,123,456×8+90,000,006 = 9,876,543,210,987,654

12,345,678,901,234,567×8+900,000,007 = 98,765,432,109,876,543

123,456,789,012,345,678×8+9,000,000,008 = 987,654,321,098,765,432

1,234,567,890,123,456,789×8+90000000009 = 9,876,543,210,987,654,321

12,345,678,901,234,567,890×8+ 900000000090 = 98,765,432,109,876,543,210

...  (end of cycle) ...

90,004

[Tech.]  The tail number of the current Air Force Two (Boeing 757-200, C-32A).

90,144

[Math.]  901442 = 8,125,940,736, a square number using each of 10 digits 0-9 once. (The 75th of 87 such numbers).

90,153

[Math.]  901532 = 8,127,563,409, a square number using each of 10 digits 0-9 once. (The 76th of 87 such numbers).

90,198

[Math.]  901982 = 8,135,679,204, a square number using each of 10 digits 0-9 once. (The 77th of 87 such numbers).

90,210

[Movie]  Names of TV shows/series or movies: “Beverley Hills 90210” and “Dr. 90210”.

90,277

[Library]  ISBN-90-277 is the International Standard Book Number for books published by D. Reidel Publishing Company.

90,601

[Math.]  Six square numbers using the same digits: 1302 = 16900, 1402 = 19600, 3102 = 96100, 1032 = 10609, 2472 = 61009 and 3012 = 90601.

90,625

[Math.]  An automorphic number, whose powers end with the number itself. It is extracted from a 17-digit automorphic number 56,259,918,212,890,625, which remains automorphic when dropping the left-most digits.

90,6252 = 8,212,890,625

90,6253 = 744,293,212,890,625

90,825

[Math.]  A Cullen prime number: 90825´290825+1.

90,9nn

[Zip]  No such U.S. Postal Zip Codes.

90nnn

[Zip]  U.S. Postal Zip Codes of California: 90nnn-95nnn, 960nn and 961nn.

9nnnn

[Zip]  U.S. Postal Zip Codes of Alaska: 995nn-999nn, California: 90nnn-95nnn and 960nn-961nn, Hawaii: 967nn and 968nn, Oregon: 97nnn and Washington: 98nnn and 990nn-994nn. Also Guam (GU), American Samoa (AS), Palau, Federal States of Micronesia, Northern Mariana Islands (MP), Marshall Islands…: 969nn, APO Pacific (AP): 962nn-965nn and FPO Pacific (AP): 962nn-965nn and 966nn.