21031866 is an even 8-digits composite number following 21031865
and preceding 21031867 . In scientific notation, it is written as 2.1031866 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors.
There are 7010604 positive integers (up to 21031866) that are relatively prime to 21031866.
21031866 has 8 divisors, whose sum is 32716320
The reverse of 21031866 is 66813012
Previous prime number is 27
Is Prime? no
Number parity even
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-one million thirty-one thousand eight hundred sixty-six
Scientific notation
2.1031866 × 10^7
Engineering notation
2.1031866 × 10^6
Prime Factorization
2 × 27 × 389479
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21031866
Product of the distinct prime numbers
The prime factorization of 21031866 is 2 × 27 × 389479.
Since it has a total of 3 prime factors.
5 , 4 , 98 , 19 , 184 , 459 , 319 , 138 , 10621 , 55696 , 253211 , 887040 , 3934997 , 7706181 , 71300309 , 10429544 , 747248031 , 143739878 , 2255405654 , 414444422
n×2
42063732
n×3
63095598
n×4
84127464
n×5
105159330
n÷2
10515933
n÷3
7010622
n÷3
5257966.5
n÷5
4206373.2
n2
442339387441956
n3
9.3032227232013E+21
n4
1.9566413368252E+29
n5
4.1151818406169E+36
2 √n
4586.0512426269
3 √n
276.03189612472
4 √n
67.720390154125
5 √n
29.145771866816
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
-21031865
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 21031866 can be divided by 8 positive divisors.
The sum of these divisors (counting 21031866) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000001110101110111010
3
Ternary
1110120112022000
4
Quaternary
1100032232322
5
Quinary
20341004431
6
Senary
2030441430
8
Octal
120165672
10
Decimal
21031866
12
Duodecimal
7063276
16
Hexadecimal
140ebba
20
Vigesimal
6b8jd6
36
Base36
cisai
md5
c976b6b27cbaa766236525521802173c
sha1
244e97a1b1625da85710f63171921748455d2818
sha256
ef4d9a178067b7ef5aaa107963619daa1906fb01276c3ebff934388533687612
sha512
57f06eec8f4aec9300f3451129b0a0578c46dd45d14a98e0f445dbbaef84181be4c2eab858406ae72c2f2c50483f887781cfbe66737d8c40f9f017db64015986
ripemd-160
363cf0fb11257d7aa98adaeb43e4dc2de67f57d8
Diameter
42063732
Circumference
132147111.43377
Area
1.3896501699811E+15
Volume
3.8969248215892E+22
Surface area
5.5586006799242E+15
Circumference
132147111.43377
Perimeter
84127464
Area
442339387441956
Diagonal
29743550.139214
Surface area
2654036324651736
Volume
9.3032227232013E+21
Space diagonal
36428260.48998
Perimeter
63095598
Area
1.9153857330959E+14
Altitude
18214130.24499
Surface area
1.9153857330959E+14
Volume
1.0963953124107E+21
Height
9914516.7130712