Number 48

A page of the Numeropedia - the Special Encyclopedia of Numbers

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[Chem.]  The atomic number of Cadmium (Cd).

[Geology]  The number of continental states of the United States.

[History]  Arizona became the 48th state of the U.S. on 14 February 1912. Also, nicknamed Valentine State.

[History]  The number of U.S. state names appearing on the decorated, carved frieze above the columns of the Lincoln Memorial in Washington, D.C. When it was dedicated, the United States had only 48 states.

[Math.]  48 = 82–42 = (4+8)×4, where 8 = 4×2.

[Math.]  48×(4+8) = 43+83 = 576.

[Math.]  7632 = 48´159, using each of 9 digits 1-9 once.

[Math.]

12×21 = 252 = 21×12

12×42 = 504 = 21×24          24×21 =    504 = 42×12

12×63 = 756 = 21×36          24×63 = 1,512 = 42×36

12×84 = 1,008 = 21×48       24×42 = 1,008 = 42×24

36×84 = 3,024 = 63×48       24×84 = 2,016 = 42×48.

[Math.]  482 = 2304 = 22+52+82+112+142+172+202+232+262, which are square of 9 terms of an arithmetic progression of common difference 3. (References [19])

[Math.]  Repeatedly inserting numbers 48 in the middle of the square number 49 yields other squares 4489 = 672, 444889 = 6672, 44448889 = 66672

[Math.]  A prime number.

Repeatedly inserting number 48 into the middle of number 43 gives a sequences of prime number: 43, 4483, 444,883, 44,448,883 and 4,444,488,883.

[Measure]  The number of teaspoons in a cup. U.S. customary units for kitchen measurements: ½ pints = 1 cup = 8 fluid ounces = 16 tablespoons = 48 teaspoons = 2880 drops = 236.588 ml.

[Movie]  Names of TV shows/series or movies: “48 Hours” and “Another 48 Hours”.

[Phone]  International telephone dialing code for Poland.

[Science]

 American system British system Number ***** quindecillion 1090 quindecillion octillion 1048 octillion ***** 1027

[Sport]  The maximum length of a golf club (except for putters): 48 inches (about 1.219 m). (By Rules of Golf issued by the Royal & Ancient Golf Club of St. Andrews and U.S. Golf Association).

[Sport]  The regular playing time of an NBA (National Basketball Association) game is 48 minutes, in four 12-minute quarters.

[Tech.]  The voltage for telephone system is 48V. Other possible voltages are in the range from36 to 60V.

[World]  The ISO country code for Bahrain is 048. (ISO-3166)