Representation numerals

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XXVII

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二十七

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Numeral systems

Binary: 11011

Septimal (base 7): 36

Octal: 33

Hexadecimal: 1b

Base 24: 13

Factorization

27 = 3 × 3 × 3

27 has 4 divisors: 1, 3, 9, 27

Sum of all divisors other than 27: 13

27 = 3 ^{3}

Sums & differences

Difference of 2 squares: 27 = 6^{2} - 3^{2} = 14^{2} - 13^{2}

Characteristics

27 is a palindromic number in binary system (11011)