21009009 is an odd 8-digits composite number following 21009008
and preceding 21009010 . In scientific notation, it is written as 2.1009009 × 10^7.
The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors.
There are 12005136 positive integers (up to 21009009) that are relatively prime to 21009009.
21009009 has 8 divisors, whose sum is 32013760
The reverse of 21009009 is 90090012
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty-one million nine thousand nine
Scientific notation
2.1009009 × 10^7
Engineering notation
2.1009009 × 10^6
Prime Factorization
3 × 7 × 1000429
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21009009
Product of the distinct prime numbers
The prime factorization of 21009009 is 3 × 7 × 1000429.
Since it has a total of 3 prime factors.
4 , 4 , 31 , 85 , 747 , 793 , 2052 , 3603 , 28251 , 65473 , 576233 , 613355 , 4397787 , 9714684 , 32874549 , 591809 , 586177031 , 441296302 , 3734893727 , 5745038014
n×2
42018018
n×3
63027027
n×4
84036036
n×5
105045045
n÷2
10504504.5
n÷3
7003003
n÷3
5252252.25
n÷5
4201801.8
n2
441378459162081
n3
9.2729240209423E+21
n4
1.9481494421229E+29
n5
4.0928689162906E+36
2 √n
4583.5585520423
3 √n
275.93186461345
4 √n
67.701983368601
5 √n
29.139434105869
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
-21009008
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 21009009 can be divided by 8 positive divisors.
The sum of these divisors (counting 21009009) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000001001001001110001
3
Ternary
1110112100221110
4
Quaternary
1100021021301
5
Quinary
20334242014
6
Senary
2030143533
8
Octal
120111161
10
Decimal
21009009
12
Duodecimal
7051ba9
16
Hexadecimal
1409271
20
Vigesimal
6b62a9
36
Base36
cianl
md5
a54665637f1e48eb2521619ed99bc03e
sha1
e7ed7fc20e04d6ab13eb267f95f0a683d1557e4a
sha256
157c77fa4f3d7a85e22e304edb2c2425829e36e4251fab45388cf38f1466a915
sha512
3c884f7a071c49e363e5bf0f2aea7441211f0ef7ed3df335b14cb164fe05e258bb1b6ae5f7d4c7282deed02380713cd19701a6ec6e6aac5f90701127c8d5d9e9
ripemd-160
da49ff4c5c14a3354f780d52e7e10e34f45e460e
Diameter
42018018
Circumference
132003496.6672
Area
1.3866313247564E+15
Volume
3.8842333308652E+22
Surface area
5.5465252990255E+15
Circumference
132003496.6672
Perimeter
84036036
Area
441378459162081
Diagonal
29711225.459818
Surface area
2648270754972486
Volume
9.2729240209423E+21
Space diagonal
36388671.004672
Perimeter
63027027
Area
1.911224791588E+14
Altitude
18194335.502336
Surface area
1.911224791588E+14
Volume
1.092824576106E+21
Height
9903741.8199395