1 million digits of PI 1 billion digits of PI Mandelbrot set Explorer

Number 20

Properties of the number 20

Prime Factorization 22 x 5
Divisors 1, 2, 4, 5, 10, 20
Count of divisors 6
Sum of divisors 42
Previous integer 19
Next integer 21
Is prime? NO
Previous prime 19
Next prime 23
20th prime number
calculating, please wait
Is a Fibonacci number? NO
20th Fibonacci number 6765
Zeckendorf representation 13 + 5 + 2
Is a Pell number? NO
Is a regular number? YES
Is a perfect number? NO
Is a perfect square number? NO
Is a perfect cube number? NO
Is power of 2? NO
Is power of 3? NO
Factorial 20! 2432902008176640000
Square 202 400
Square root √20 4.4721359549996
Cube 203 8000
Cubic root ∛20 2.7144176165949
Natural logarithm 2.995732273554
Decimal logarithm 1.301029995664

Trigonometry of the number 20

20 modulo 360° 20°
Sine of 20 radians 0.91294525072763
Cosine of 20 radians 0.40808206181339
Tangent of 20 radians 2.2371609442247
Sine of 20 degrees 0.34202014332567
Cosine of 20 degrees 0.93969262078591
Tangent of 20 degrees 0.3639702342662
20 degrees in radiants 0.34906585039887
20 radiants in degrees 1145.9155902616

Base conversion of the number 20

Binary 10100
Octal 24
Duodecimal 18
Hexadecimal 14
« Previous Next »

Recommended Books

Looking for good books to read? Take a look at these books if you want to know more about the theory of numbers
To guide today's students through the key milestones and developments in number theory
Read it »
A comprehensive introduction to number theory, with complete proofs, worked examples, and exercises.
Read it »
Several of its challenges are so easy to state that everyone can understand them, and yet no-one has ever been able to resolve them.
Read it »
In addition to covering the basics, it offers an outstanding introduction to partitions, multiplicativity-divisibility, and more.
Read it »