21105843 is an odd 8-digits composite number following 21105842
and preceding 21105844 . In scientific notation, it is written as 2.1105843 × 10^7.
The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors.
There are 12791400 positive integers (up to 21105843) that are relatively prime to 21105843.
21105843 has 8 divisors, whose sum is 30699456
The reverse of 21105843 is 34850112
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-one million one hundred five thousand eight hundred forty-three
Scientific notation
2.1105843 × 10^7
Engineering notation
2.1105843 × 10^6
Prime Factorization
3 × 11 × 639571
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21105843
Product of the distinct prime numbers
The prime factorization of 21105843 is 3 × 11 × 639571.
Since it has a total of 3 prime factors.
10 , 5 , 17 , 99 , 813 , 813 , 1527 , 9186 , 45416 , 29157 , 318139 , 665154 , 1067913 , 8427917 , 50541451 , 33388580 , 302232661 , 88223783 , 2144070972 , 1961742220
n×2
42211686
n×3
63317529
n×4
84423372
n×5
105529215
n÷2
10552921.5
n÷3
7035281
n÷3
5276460.75
n÷5
4221168.6
n2
445456608740649
n3
9.4017372473926E+21
n4
1.9843159027072E+29
n5
4.1880659904941E+36
2 √n
4594.1095981702
3 √n
276.35515348776
4 √n
67.779861302383
5 √n
29.166246413408
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
-21105842
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 21105843 can be divided by 8 positive divisors.
The sum of these divisors (counting 21105843) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000100000110010110011
3
Ternary
1110201021202220
4
Quaternary
1100200302303
5
Quinary
20400341333
6
Senary
2032212123
8
Octal
120406263
10
Decimal
21105843
12
Duodecimal
709a043
16
Hexadecimal
1420cb3
20
Vigesimal
6bi4c3
36
Base36
ckddf
md5
2dcfe6b2b1b4511458bbc91714700147
sha1
da74953752264466ffcafdf71cb045c362767fb9
sha256
6550ede683052383fc979eb6ef37d16c437e47aebc5100cc79504bfbe78f1a18
sha512
92ba01ff44afdccf3fbac7e21310009f3a2972652abede01ad217728dbda2b3bab068f46ffea324573b544620370686230415554a27a50492176daef3a10645e
ripemd-160
04f6a64d5205dd7ef31391c4570839f0a72dad04
Diameter
42211686
Circumference
132611922.63324
Area
1.3994432095126E+15
Volume
3.9381904889853E+22
Surface area
5.5977728380506E+15
Circumference
132611922.63324
Perimeter
84423372
Area
445456608740649
Diagonal
29848169.415917
Surface area
2672739652443894
Volume
9.4017372473926E+21
Space diagonal
36556392.412572
Perimeter
63317529
Area
1.9288836972653E+14
Altitude
18278196.206286
Surface area
1.9288836972653E+14
Volume
1.1080053604276E+21
Height
9949389.8053058