46 (NUMBER)

'46' ('forty-six') is the natural number following 45 and preceding 47.

Cardinal	46 forty-six
Ordinal	46th forty-sixth
Factorization	$2cdot\; 23$
Divisors	1, 2, 23, 46
Roman numeral	XLVI
Binary	101110
Hexadecimal	2E

Contents

In mathematics

In science

Astronomy

In religion

In sports

In other fields

Historical years

In mathematics

'Forty-six' is a Wedderburn-Etherington number, an enneagonal number and a centered triangular number. It is the sum of the totient function for the first twelve integers. 46 is the largest even integer that can't be expressed as a sum of two abundant numbers.
46 is the 13th semiprime. 46 is the third semiprime with a semiprime aliquot sum. The aliquot sequence of 46 is (46,26,16,15,9,4,3,1,0).

In science

★ The atomic number of palladium

★ The number of human chromosomes

Astronomy

★ Messier object M46, a magnitude 6.5 open cluster in the constellation Puppis

★ The New General Catalogue object NGC 46, a star in the constellation Pisces

★ The Saros number of the solar eclipse series which began on -1371 April 1 and ended on -91 May 8. The duration of Saros series 46 was 1280.1 years, and it contained 72 solar eclipses.

★ The Saros number of the lunar eclipse series which began on -1358 July 19 and ended on 12 October 8. The duration of Saros series 46 was 1370.5 years, and it contained 77 lunar eclipses.

In religion

★ The total of books in the ''Old Testament'', Catholic version, if the Book of ''Lamentations'' is counted as a book separate from the Book of ''Jeremiah''

★ In Psalm 46 in the King James Version of the Bible, the 46th word from the beginning is "shake" and the 46th word from the end is "spear"; at the time of publication of the King James Bible, playwright William Shakespeare was 46 years old

In sports

★ The number of mountains in the ''46 peaks'' of the Adirondack mountain range. People who have climbed all of them are called "forty-sixers"; there is also an unofficial 47th peak

★ Valentino Rossi's race number in the MotoGP motorcycle world championship

★ The name of a defensive scheme used in American football; see 46 defense

In other fields

'Forty-six' is also:

★ The code for international direct dial phone calls to Sweden

★ The number of samurai, out of 47, who carried out the attack in the historical Ako vendetta; sometimes referred to as ''the 46 Ronins'' to discount the one samurai forced to turn back

★ In the title of the movie ''Code 46'', starring Tim Robbins and Samantha Morton

★ Route 46 in New Jersey goes to the George Washington Bridge

★ Because 46 in Japanese can be pronounced as "yon roku", and "yoroshiku"（よろしく） means "my best regards" in Japanese, people sometimes use 46 for greeting.

★ 46 is the number of the City Chevrolet and Superflo cars driven by Cole Trickle in the movie Days of Thunder.
At age 46:

★ Ben Franklin conducted kite experiments, and discovered lightning is an electrical discharge

★ Scottish surgeon, James Baird, discovered hypnosis

★ Jack Nicklaus became oldest man ever to win golf's Masters

★ Alfred Eisenstaedt took his a photo of a sailor sweeping up a girl in a kiss during the V-J day celebration in Times Square.

★ Theodore Roosevelt was elected to a full term as President in 1904

★ John F. Kennedy was assassinated on November 22, 1963

Historical years

'46 A.D.', 46 B.C., 1946, 2046, etc.