20205981 (number)

20205981 is an odd 8-digits composite number following 20205980 and preceding 20205982. In scientific notation, it is written as 2.0205981 × 10^7. The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors. There are 13425480 positive integers (up to 20205981) that are relatively prime to 20205981.

Interesting facts

Basic properties

Name

Name twenty million two hundred five thousand nine hundred eighty-one

Notation

Scientific notation 2.0205981 × 10^7
Engineering notation 2.0205981 × 10^6

Prime Factorization of 20205981

Prime Factorization 3 × 3 × 7219 × 311

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 6735327
Product of the distinct prime numbers

The prime factorization of 20205981 is 3 × 3 × 7219 × 311. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 4, 26, 3, 423, 746, 8075, 9381, 91863, 46410, 885304, 73077, 2953861, 7886396, 81218779, 43516158, 547567077, 763709457, 4023581173, 8818119484

Basic calculations (n = 20205981)

Multiplication

n×y
n×2 40411962
n×3 60617943
n×4 80823924
n×5 101029905

Division

n÷y
n÷2 10102990.5
n÷3 6735327
n÷3 5051495.25
n÷5 4041196.2

Exponentiation

ny
n2 408281668172361
n3 8.249731629739E+21
n4 1.6669392056561E+29
n5 3.3682141917641E+36

Nth Root

y√n
2√n 4495.1063391204
3√n 272.3704448259
4√n 67.045554208466
5√n 28.913188529703

Divisors of 20205981

1, 3, 9, 311, 933, 2799, 7219, 21657, 64971, 2245109, 6735327, 20205981

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20205980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20205981 can be divided by 12 positive divisors. The sum of these divisors (counting 20205981) is 1, the average is 0.083333333333333.

Base conversion 20205981

Base System Value
2 Binary 1001101000101000110011101
3 Ternary 1102000120101200
4 Quaternary 1031011012131
5 Quinary 20133042411
6 Senary 2001030113
8 Octal 115050635
10 Decimal 20205981
12 Duodecimal 6925339
16 Hexadecimal 134519d
20 Vigesimal 665ej1
36 Base36 c1319

Cryptographic Hash Functions

md5 8bd2a7c8b28ee9e323653fa4b1e6e1ba
sha1 3f6409eb43e12e08b33ba5086a4e3578c6502738
sha256 0c1863a2ab139bfab13b7523e5193f9b9ae035c982b80e477f7de26971fc9409
sha512 583f938d4f7fc2df6e5a6bb626fd4450fc9462490e6e3a4c814ee6088e7cb22521bd0d7bd085c91506ce4fc62b5d35a5ddc238ea8aee91061c4732fd0168ee68
ripemd-160 9189a9d1966aec638d8676e4b219e5cc962a3d44

20205981 as geometric shapes

Circle

Radius = n
Diameter 40411962
Circumference 126957922.93635
Area 1.2826546893257E+15

Sphere

Radius = n
Volume 3.4556395042767E+22
Surface area 5.1306187573027E+15
Circumference 126957922.93635

Square

Length = n
Perimeter 80823924
Area 408281668172361
Diagonal 28575572.371253

Cube

Length = n
Surface area 2449690009034166
Volume 8.249731629739E+21
Space diagonal 34997785.708771

Equilateral Triangle

Length = n
Perimeter 60617943
Area 1.7679114826838E+14
Altitude 17498892.854386

Triangular Pyramid

Length = n
Surface area 1.7679114826838E+14
Volume 9.7224019639294E+20
Height 9525190.7904177