21568121 is an odd 8-digits composite number following 21568120
and preceding 21568122 . In scientific notation, it is written as 2.1568121 × 10^7.
The sum of its digits is 26. It has a total of 2 prime factors and 4 positive divisors.
There are 20299392 positive integers (up to 21568121) that are relatively prime to 21568121.
21568121 has 4 divisors, whose sum is 22836852
The reverse of 21568121 is 12186512
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8
Name
twenty-one million five hundred sixty-eight thousand one hundred twenty-one
Scientific notation
2.1568121 × 10^7
Engineering notation
2.1568121 × 10^6
Prime Factorization
17 × 1268713
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21568121
Product of the distinct prime numbers
The prime factorization of 21568121 is 17 × 1268713.
Since it has a total of 2 prime factors.
9 , 7 , 31 , 71 , 995 , 822 , 7055 , 6236 , 79838 , 29374 , 777355 , 946583 , 1369121 , 787963 , 70119521 , 81817698 , 325479162 , 518863766 , 2830269612 , 6673997846
n×2
43136242
n×3
64704363
n×4
86272484
n×5
107840605
n÷2
10784060.5
n÷3
7189373.6666667
n÷3
5392030.25
n÷5
4313624.2
n2
465183843470641
n3
1.003314142322E+22
n4
2.1639600822612E+29
n5
4.6672552893379E+36
2 √n
4644.1491147464
3 √n
278.35825403057
4 √n
68.147994209268
5 √n
29.292906290031
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21568120
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21568121 can be divided by 4 positive divisors.
The sum of these divisors (counting 21568121) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010010001101001111001
3
Ternary
1111120202220022
4
Quaternary
1102101221321
5
Quinary
21010134441
6
Senary
2050140225
8
Octal
122215171
10
Decimal
21568121
12
Duodecimal
7281675
16
Hexadecimal
1491a79
20
Vigesimal
6eg061
36
Base36
cua2h
md5
bb06ce52993b97eac0edc934eb977584
sha1
97a8231ec9de747167d1193a6fd44e2134ebaf9a
sha256
084fe1c4bd81998f63ea24a43b77f4b6beaeb8d3c2cd4f7481bb602459203aab
sha512
ea0e20b1b1adc3e89c646fa4434f76625169fddfa2f1ee280eca64fdcafeee582e4d5cb0beae2fc11bc433959e6988fb6aea433099ba12363c7db278ce2006f6
ripemd-160
b3492042577313286e0c3a9f5ca6cfe4dc523af0
Diameter
43136242
Circumference
135516500.97067
Area
1.461418145216E+15
Volume
4.202672451682E+22
Surface area
5.8456725808641E+15
Circumference
135516500.97067
Perimeter
86272484
Area
465183843470641
Diagonal
30501929.233104
Surface area
2791103060823846
Volume
1.003314142322E+22
Space diagonal
37357081.395793
Perimeter
64704363
Area
2.0143051293783E+14
Altitude
18678540.697897
Surface area
2.0143051293783E+14
Volume
1.1824170561604E+21
Height
10167309.744368