21081709 is an odd 8-digits composite number following 21081708
and preceding 21081710 . In scientific notation, it is written as 2.1081709 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 18701760 positive integers (up to 21081709) that are relatively prime to 21081709.
21081709 has 8 divisors, whose sum is 23070528
The reverse of 21081709 is 90718012
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million eighty-one thousand seven hundred nine
Scientific notation
2.1081709 × 10^7
Engineering notation
2.1081709 × 10^6
Prime Factorization
5687 × 11 × 337
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21081709
Product of the distinct prime numbers
The prime factorization of 21081709 is 5687 × 11 × 337.
Since it has a total of 3 prime factors.
5 , 5 , 64 , 50 , 524 , 592 , 7926 , 6810 , 32421 , 57852 , 999163 , 489804 , 1139120 , 532416 , 48729905 , 32748544 , 186840482 , 697935532 , 5769175323 , 8692700870
n×2
42163418
n×3
63245127
n×4
84326836
n×5
105408545
n÷2
10540854.5
n÷3
7027236.3333333
n÷3
5270427.25
n÷5
4216341.8
n2
444438454360681
n3
9.3695221632417E+21
n4
1.9752553971451E+29
n5
4.1641759483293E+36
2 √n
4591.4822225508
3 √n
276.24977825989
4 √n
67.760476847133
5 √n
29.159573186776
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
-21081708
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 21081709 can be divided by 8 positive divisors.
The sum of these divisors (counting 21081709) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000011010111001101101
3
Ternary
1110200001200001
4
Quaternary
1100122321231
5
Quinary
20344103314
6
Senary
2031504301
8
Octal
120327155
10
Decimal
21081709
12
Duodecimal
7088091
16
Hexadecimal
141ae6d
20
Vigesimal
6bf459
36
Base36
cjur1
md5
a89a720639794f1386e3c59cf63737b7
sha1
c733593fd46feed97c88d11c57bcd27dd165d1c9
sha256
8d7d90af5df9c733b2a7a358d2476feca5db253f90cb03e867c2c09b93493e95
sha512
09ae59f76c4e076158c50e40cd2ddf784d86bd4c7dc8b91c4f77a8aef3cf2031a56725f088bfa1ae60da0f2e92e0a03e2be1e134d576cdff777da384f2357656
ripemd-160
0a0b3530c0739a175a0c15508de13a04c35fa380
Diameter
42163418
Circumference
132460284.23904
Area
1.3962445831923E+15
Volume
3.9246962660916E+22
Surface area
5.5849783327693E+15
Circumference
132460284.23904
Perimeter
84326836
Area
444438454360681
Diagonal
29814038.785803
Surface area
2666630726164086
Volume
9.3695221632417E+21
Space diagonal
36514591.098382
Perimeter
63245127
Area
1.9244749594752E+14
Altitude
18257295.549191
Surface area
1.9244749594752E+14
Volume
1.104208776351E+21
Height
9938012.928601