21006943 is an odd 8-digits composite number following 21006942
and preceding 21006944 . In scientific notation, it is written as 2.1006943 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 20727000 positive integers (up to 21006943) that are relatively prime to 21006943.
21006943 has 8 divisors, whose sum is 21288960
The reverse of 21006943 is 34960012
Previous prime number is 251
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million six thousand nine hundred forty-three
Scientific notation
2.1006943 × 10^7
Engineering notation
2.1006943 × 10^6
Prime Factorization
127 × 251 × 659
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21006943
Product of the distinct prime numbers
The prime factorization of 21006943 is 127 × 251 × 659.
Since it has a total of 3 prime factors.
4 , 4 , 44 , 56 , 584 , 541 , 2781 , 746 , 83233 , 38405 , 771824 , 376311 , 7479528 , 7084800 , 20426294 , 67942649 , 986494748 , 622603396 , 1647655043 , 4135472285
n×2
42013886
n×3
63020829
n×4
84027772
n×5
105034715
n÷2
10503471.5
n÷3
7002314.3333333
n÷3
5251735.75
n÷5
4201388.6
n2
441291654205249
n3
9.2701886262654E+21
n4
1.9473832407121E+29
n5
4.0908568736793E+36
2 √n
4583.3331757576
3 √n
275.92281938401
4 √n
67.700318874859
5 √n
29.138860976131
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
-21006942
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 21006943 can be divided by 8 positive divisors.
The sum of these divisors (counting 21006943) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000001000101001011111
3
Ternary
1110112021002221
4
Quaternary
1100020221133
5
Quinary
20334210233
6
Senary
2030130211
8
Octal
120105137
10
Decimal
21006943
12
Duodecimal
7050967
16
Hexadecimal
1408a5f
20
Vigesimal
6b5h73
36
Base36
ci927
md5
e74f8c1d28814746fe04e7708ad886a4
sha1
bf49099379eef6387d12e82b28b8697f23872298
sha256
8cb6d1c98d32f2993c59209cc19e9c251b083c1bec44e73c75a877733e180df6
sha512
5a53f5467d39c1f172bb605e41e660434bbf311775d3f576aeba693ed3355740e0cd70e680ecca31ffd0886007855686933d179641d0ec426cf20a31fc5482c3
ripemd-160
5aac8c6549a2d1a2c6169232e96c3b0699901f8d
Diameter
42013886
Circumference
131990515.60636
Area
1.3863586189417E+15
Volume
3.8830875314223E+22
Surface area
5.5454344757668E+15
Circumference
131990515.60636
Perimeter
84027772
Area
441291654205249
Diagonal
29708303.694599
Surface area
2647749925231494
Volume
9.2701886262654E+21
Space diagonal
36385092.587703
Perimeter
63020829
Area
1.910848915099E+14
Altitude
18192546.293852
Surface area
1.910848915099E+14
Volume
1.0925022067518E+21
Height
9902767.8981995