21891640 (number)

21891640 is an even 8-digits composite number following 21891639 and preceding 21891641. In scientific notation, it is written as 2.1891640 × 10^7. The sum of its digits is 31. It has a total of 5 prime factors and 16 positive divisors. There are 8756640 positive integers (up to 21891640) that are relatively prime to 21891640.

Interesting facts

Basic properties

Name

Name twenty-one million eight hundred ninety-one thousand six hundred forty

Notation

Scientific notation 2.1891640 × 10^7
Engineering notation 2.1891640 × 10^6

Prime Factorization of 21891640

Prime Factorization 2 × 2 × 2 × 5 × 547291

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 5472910
Product of the distinct prime numbers

The prime factorization of 21891640 is 2 × 2 × 2 × 5 × 547291. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 5, 83, 4, 421, 957, 1699, 6721, 11731, 1260, 791334, 852329, 322920, 8279806, 43017908, 34930275, 190601936, 381285011, 3101668986, 3025363238

Basic calculations (n = 21891640)

Multiplication

n×y
n×2 43783280
n×3 65674920
n×4 87566560
n×5 109458200

Division

n÷y
n÷2 10945820
n÷3 7297213.3333333
n÷3 5472910
n÷5 4378328

Exponentiation

ny
n2 479243901889600
n3 1.0491434972362E+22
n4 2.2967471749837E+29
n5 5.027956232576E+36

Nth Root

y√n
2√n 4678.850286128
3√n 279.74313177155
4√n 68.402121941706
5√n 29.380261677184

Divisors of 21891640

1, 2, 4, 5, 8, 10, 20, 40, 547291, 1094582, 2189164, 2736455, 4378328, 5472910, 10945820, 21891640

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21891639
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21891640 can be divided by 16 positive divisors. The sum of these divisors (counting 21891640) is 1, the average is 0.0625.

Base conversion 21891640

Base System Value
2 Binary 1010011100000101000111000
3 Ternary 1112012012200111
4 Quaternary 1103200220320
5 Quinary 21101013030
6 Senary 2101114104
8 Octal 123405070
10 Decimal 21891640
12 Duodecimal 73b8934
16 Hexadecimal 14e0a38
20 Vigesimal 6gg920
36 Base36 d17p4

Cryptographic Hash Functions

md5 2add51fcd4b9800a8237c783069c4ef7
sha1 9342aaea17ac4a442612829595fc2c5a7a9cc5aa
sha256 71b49a8fe6c43831a569ba59305703a74a42a8ce41ab362494ad31d10554a1b2
sha512 08c087deada4687710b99bfbb51d3a94ea55d421212cf6beb0c9718725b3516ef306e1db49bc877843100f808942d459548e4def3ea866a2baaf002320f2fe79
ripemd-160 0992788d94f030aa959af4537880f5635802d527

21891640 as geometric shapes

Circle

Radius = n
Diameter 43783280
Circumference 137549230.79806
Area 1.5055891214541E+15

Sphere

Radius = n
Volume 4.3946420046385E+22
Surface area 6.0223564858163E+15
Circumference 137549230.79806

Square

Length = n
Perimeter 87566560
Area 479243901889600
Diagonal 30959454.190589

Cube

Length = n
Surface area 2875463411337600
Volume 1.0491434972362E+22
Space diagonal 37917432.741007

Equilateral Triangle

Length = n
Perimeter 65674920
Area 2.0751869682259E+14
Altitude 18958716.370504

Triangular Pyramid

Length = n
Surface area 2.0751869682259E+14
Volume 1.2364274688892E+21
Height 10319818.06353