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Number 40

Prime factorization

Factorization 2 * 2 * 2 * 5
Divisors 1, 2, 4, 5, 8, 10, 20, 40
Count of divisors 8
Sum of divisors 90

Basic properties

Is prime? × NO
Previous integer 39
Next integer 41
Previous prime number 37
Next prime number 41
Reciprocal 0.025
Square 1600
Square root 6.324555320336759
Natural logarithm 3.6888794541139363
Decimal logarithm 1.6020599913279627
Sine 0.7451131604793488
Cosine -0.6669380616522619
Tangent -1.117214930923896

Expressions

Binary 101000
Octal 50
Hexadecimal 28