21106721 is an odd 8-digits prime number following 21106720
and preceding 21106722 . In scientific notation, it is written as 2.1106721 × 10^7.
The sum of its digits is 20. It has a total of 1 prime factors and 2 positive divisors.
There are 21106720 positive integers (up to 21106721) that are relatively prime to 21106721.
21106721 has 2 divisors, whose sum is 21106722
The reverse of 21106721 is 12760112
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2
Name
twenty-one million one hundred six thousand seven hundred twenty-one
Scientific notation
2.1106721 × 10^7
Engineering notation
2.1106721 × 10^6
Prime Factorization
21106721
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21106721
Product of the distinct prime numbers
The prime factorization of 21106721 is 21106721.
Since it has a total of 1 prime factors.
10 , 3 , 14 , 21 , 532 , 726 , 6656 , 7890 , 58989 , 31439 , 43810 , 678603 , 6634123 , 5260129 , 57861619 , 91239178 , 898757219 , 436961053 , 2348035977 , 4182798483
n×2
42213442
n×3
63320163
n×4
84426884
n×5
105533605
n÷2
10553360.5
n÷3
7035573.6666667
n÷3
5276680.25
n÷5
4221344.2
n2
445493671371841
n3
9.4029106289111E+21
n4
1.9846461123236E+29
n5
4.1889371776549E+36
2 √n
4594.2051543221
3 √n
276.35898554603
4 √n
67.78056619948
5 √n
29.166489071692
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21106722
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10553361
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4594.2052631549
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999052435
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21106721 can be divided by 2 positive divisors.
The sum of these divisors (counting 21106721) is 21106722, the average is 10553361.
Base
System
Value
2
Binary
1010000100001000000100001
3
Ternary
1110201022222102
4
Quaternary
1100201000201
5
Quinary
20400403341
6
Senary
2032220145
8
Octal
120410041
10
Decimal
21106721
12
Duodecimal
709a655
16
Hexadecimal
1421021
20
Vigesimal
6bi6g1
36
Base36
cke1t
md5
ea11ccde2800486caacf6981e075f404
sha1
4b0b888ae5e2953f45d4152af46fe25c302163af
sha256
e1e53f58925979f5fb98ca23512e5a2c7ccd17e87aec46b0e264ad3659951d7f
sha512
17599f3a0a5ec8ce79bf442e8a335253e4bb7213e03fd22414bf08f2c741c7751c153e7df757034ebb5ca2d789048850a06a04d605e9e2c262025ad7e0299ca3
ripemd-160
40d5c0e169102c98b3fc75e13fc5bf8bbde9a7c6
Diameter
42213442
Circumference
132617439.26994
Area
1.3995596452025E+15
Volume
3.9386819938865E+22
Surface area
5.5982385808101E+15
Circumference
132617439.26994
Perimeter
84426884
Area
445493671371841
Diagonal
29849411.095425
Surface area
2672962028231046
Volume
9.4029106289111E+21
Space diagonal
36557913.153181
Perimeter
63320163
Area
1.9290441831661E+14
Altitude
18278956.57659
Surface area
1.9290441831661E+14
Volume
1.1081436447657E+21
Height
9949803.698475