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# 35 (number)

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 Title: 35 (number) Author: World Heritage Encyclopedia Language: English Subject: Collection: Integers Publisher: World Heritage Encyclopedia Publication Date:

### 35 (number)

 ← 34 35 36 →
Cardinal thirty-five
Ordinal 35th
(thirty-fifth)
Factorization 5 × 7
Divisors 1, 5, 7, 35
Roman numeral XXXV
Binary 1000112
Ternary 10223
Quaternary 2034
Quinary 1205
Senary 556
Octal 438
Duodecimal 2B12
Hexadecimal 2316
Vigesimal 1F20
Base 36 Z36

35 (thirty-five) is the natural number following 34 and preceding 36.

## In mathematics

35 is a tetrahedral number
The 35 free hexominoes

35 is the sum of the first five triangular numbers, making it a tetrahedral number.

35 is the number of ways that three things can be selected from a set of seven unique things also known as the "combination of seven things taken three at a time".

35 is a centered cube number, a pentagonal number and a pentatope number.

35 is a highly cototient number, since there are more solutions to the equation x - φ(x) = 35 than there are for any other integers below it except 1.

There are 35 free hexominoes, the polyominoes made from six squares.

Since the greatest prime factor of 352 + 1 = 1226 is 613, which is obviously more than 35 twice, 35 is a Størmer number.

35 is a discrete semiprime (or biprime) (5 × 7); the tenth, and the first with 5 as the lowest non-unitary factor. The aliquot sum of 35 is 13 this being the second composite number with such an aliquot sum; the first being the cube 27. 35 is the last member of the first triple cluster of semiprimes 33,34,35. 85,86,87 is the second such triple discrete semiprime cluster.

35 is the highest number one can count to on one's fingers using base 6.

35 is the number of quasigroups of order 4

## Sports

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