21000843 is an odd 8-digits composite number following 21000842
and preceding 21000844 . In scientific notation, it is written as 2.1000843 × 10^7.
The sum of its digits is 18. It has a total of 4 prime factors and 16 positive divisors.
There are 13517280 positive integers (up to 21000843) that are relatively prime to 21000843.
21000843 has 16 divisors, whose sum is 32186400
The reverse of 21000843 is 34800012
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9
Name
twenty-one million eight hundred forty-three
Scientific notation
2.1000843 × 10^7
Engineering notation
2.1000843 × 10^6
Prime Factorization
9 × 3 × 29 × 26821
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21000843
Product of the distinct prime numbers
The prime factorization of 21000843 is 9 × 3 × 29 × 26821.
Since it has a total of 4 prime factors.
2 , 6 , 34 , 95 , 170 , 888 , 2848 , 3696 , 75 , 99284 , 901463 , 430888 , 6615698 , 8938773 , 7809711 , 35286878 , 365430183 , 93857271 , 91935867 , 7027472372
n×2
42001686
n×3
63002529
n×4
84003372
n×5
105004215
n÷2
10500421.5
n÷3
7000281
n÷3
5250210.75
n÷5
4200168.6
n2
441035406710649
n3
9.2621153337715E+21
n4
1.9451222997243E+29
n5
4.0849208032308E+36
2 √n
4582.6676728735
3 √n
275.89610929202
4 √n
67.695403631809
5 √n
29.137168509966
1 , 3 , 9 , 27 , 29 , 87 , 261 , 783 , 26821 , 80463 , 241389 , 724167 , 777809 , 2333427 , 7000281 , 21000843
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
-21000842
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 21000843 can be divided by 16 positive divisors.
The sum of these divisors (counting 21000843) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010000000111001010001011
3
Ternary
1110111221202000
4
Quaternary
1100013022023
5
Quinary
20334011333
6
Senary
2030042043
8
Octal
120071213
10
Decimal
21000843
12
Duodecimal
7049323
16
Hexadecimal
140728b
20
Vigesimal
6b5223
36
Base36
ci4cr
md5
8bfbae5e68a4710cbac9b9fbbba22e4a
sha1
76f2f4c86b516aa5ce46d563aa3531be4edbf4e3
sha256
466779c227a5100818ae325e07f854e20192b53653d0527b8ca51b58ece674e3
sha512
1ea259952af440237a11fc61fffd6809602d735af75a6e451d830ae14279e1acc5c7983ad6e23e3b9643c49164a01312acf3c01d841800736c4405f7de21dbe4
ripemd-160
10ccce6f0e7b055b8074d7130a0f6392d5e761bb
Diameter
42001686
Circumference
131952188.17599
Area
1.3855535936952E+15
Volume
3.8797057985704E+22
Surface area
5.5422143747806E+15
Circumference
131952188.17599
Perimeter
84003372
Area
441035406710649
Diagonal
29699676.991868
Surface area
2646212440263894
Volume
9.2621153337715E+21
Space diagonal
36374527.077777
Perimeter
63002529
Area
1.9097393308991E+14
Altitude
18187263.538889
Surface area
1.9097393308991E+14
Volume
1.091550760107E+21
Height
9899892.3306227