21001809 (number)

21001809 is an odd 8-digits composite number following 21001808 and preceding 21001810. In scientific notation, it is written as 2.1001809 × 10^7. The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors. There are 13703216 positive integers (up to 21001809) that are relatively prime to 21001809.

Interesting facts

Basic properties

Name

Name twenty-one million one thousand eight hundred nine

Notation

Scientific notation 2.1001809 × 10^7
Engineering notation 2.1001809 × 10^6

Prime Factorization of 21001809

Prime Factorization 3 × 47 × 148949

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21001809
Product of the distinct prime numbers

The prime factorization of 21001809 is 3 × 47 × 148949. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 9, 4, 6, 530, 700, 7035, 5132, 83374, 83834, 295648, 620545, 4596983, 2101736, 51533105, 65703239, 318115995, 304954004, 3894143931, 2211637570

Basic calculations (n = 21001809)

Multiplication

n×y
n×2 42003618
n×3 63005427
n×4 84007236
n×5 105009045

Division

n÷y
n÷2 10500904.5
n÷3 7000603
n÷3 5250452.25
n÷5 4200361.8

Exponentiation

ny
n2 441075981272481
n3 9.2633935131722E+21
n4 1.9454802125548E+29
n5 4.0858603837356E+36

Nth Root

y√n
2√n 4582.7730687871
3√n 275.90033946435
4√n 67.696182084273
5√n 29.137436556224

Divisors of 21001809

1, 3, 47, 141, 148949, 446847, 7000603, 21001809

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21001808
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21001809 can be divided by 8 positive divisors. The sum of these divisors (counting 21001809) is 1, the average is 0.125.

Base conversion 21001809

Base System Value
2 Binary 1010000000111011001010001
3 Ternary 1110112000001210
4 Quaternary 1100013121101
5 Quinary 20334024214
6 Senary 2030050333
8 Octal 120073121
10 Decimal 21001809
12 Duodecimal 70499a9
16 Hexadecimal 1407651
20 Vigesimal 6b54a9
36 Base36 ci53l

Cryptographic Hash Functions

md5 b74b82a1e8e93ba37a220f187db45968
sha1 a47d040ce8b41359af7a56135470409a47d922e5
sha256 ecf16d11a794f00a7aa290957a681aff977ee84f087fd868c6ef88e209c83f89
sha512 b6dff7394324853d85a0c1edbb284f721ce395a4a7596dcd922030060bf1f9f669239004014de6c70dd894612d20ac2bfa0da0fab7d638fbc635b2d7ad602f47
ripemd-160 f16539a7b92d5a94843e72285c39580082c8b8a5

21001809 as geometric shapes

Circle

Radius = n
Diameter 42003618
Circumference 131958257.73299
Area 1.3856810624405E+15

Sphere

Radius = n
Volume 3.8802412011058E+22
Surface area 5.5427242497621E+15
Circumference 131958257.73299

Square

Length = n
Perimeter 84007236
Area 441075981272481
Diagonal 29701043.122169

Cube

Length = n
Surface area 2646455887634886
Volume 9.2633935131722E+21
Space diagonal 36376200.238857

Equilateral Triangle

Length = n
Perimeter 63005427
Area 1.9099150239056E+14
Altitude 18188100.119429

Triangular Pyramid

Length = n
Surface area 1.9099150239056E+14
Volume 1.0917013949939E+21
Height 9900347.7073898