21072009 is an odd 8-digits composite number following 21072008
and preceding 21072010 . In scientific notation, it is written as 2.1072009 × 10^7.
The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors.
There are 11623584 positive integers (up to 21072009) that are relatively prime to 21072009.
21072009 has 16 divisors, whose sum is 26104320
The reverse of 21072009 is 90027012
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 seventy-two thousand nine
Scientific notation
2.1072009 × 10^7
Engineering notation
2.1072009 × 10^6
Prime Factorization
29 × 21 × 7 × 4943
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21072009
Product of the distinct prime numbers
The prime factorization of 21072009 is 29 × 21 × 7 × 4943.
Since it has a total of 4 prime factors.
1 , 2 , 55 , 100 , 657 , 963 , 8202 , 1702 , 97877 , 90624 , 38588 , 518479 , 1159039 , 4183050 , 62203599 , 1249740 , 832550259 , 219220884 , 8845727656 , 9196663768
n×2
42144018
n×3
63216027
n×4
84288036
n×5
105360045
n÷2
10536004.5
n÷3
7024003
n÷3
5268002.25
n÷5
4214401.8
n2
444029563296081
n3
9.3565949540411E+21
n4
1.9716225308091E+29
n5
4.1546047713812E+36
2 √n
4590.4257972436
3 √n
276.20740291717
4 √n
67.752681107419
5 √n
29.156889344292
1 , 7 , 21 , 29 , 147 , 203 , 609 , 4263 , 4943 , 34601 , 103803 , 143347 , 726621 , 1003429 , 3010287 , 21072009
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21072008
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21072009 can be divided by 16 positive divisors.
The sum of these divisors (counting 21072009) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010000011000100010001001
3
Ternary
1110122120100210
4
Quaternary
1100120202021
5
Quinary
20343301014
6
Senary
2031351333
8
Octal
120304211
10
Decimal
21072009
12
Duodecimal
7082549
16
Hexadecimal
1418889
20
Vigesimal
6be009
36
Base36
cjn9l
md5
01e413febd0f16d3dcc0698f912451fe
sha1
334b0c697e21537389d49546dd1c26ed554ef0a2
sha256
97b6deea5dce4cd874bc41a314e639d4dfd471feb7b7bb3f5a7b97298c086b72
sha512
dbc581cee7146ba19865a50a0774d7b61c91097eaad34501df7d14cacc60905657544eac8ee5814910f775025e26e5c818e1c82fddb98a19b8408174d44bb8cb
ripemd-160
8de9404099d50feef030db49bbac20817cc5bd63
Diameter
42144018
Circumference
132399337.34156
Area
1.3949600140277E+15
Volume
3.9192813293641E+22
Surface area
5.5798400561106E+15
Circumference
132399337.34156
Perimeter
84288036
Area
444029563296081
Diagonal
29800320.914248
Surface area
2664177379776486
Volume
9.3565949540411E+21
Space diagonal
36497790.205549
Perimeter
63216027
Area
1.9227044092286E+14
Altitude
18248895.102774
Surface area
1.9227044092286E+14
Volume
1.1026852901364E+21
Height
9933440.3047493