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Number 81985

Prime factorization

Factorization 5 * 19 * 863
Divisors 1, 5, 19, 95, 863, 4315, 16397, 81985
Count of divisors 8
Sum of divisors 103680

Basic properties

Is prime? × NO
Previous integer 81984
Next integer 81986
Previous prime number 81973
Next prime number 82003
Reciprocal 0.000012197353174
Square 6721540225
Square root 286.3302289315608
Natural logarithm 11.31429158268397
Decimal logarithm 4.913734401004057
Sine 0.9100815238126337
Cosine -0.4144292702197499
Tangent -2.1959875646091933

Expressions

Binary 10100000001000001
Octal 240101
Hexadecimal 14041