21720009 is an odd 8-digits composite number following 21720008
and preceding 21720010 . In scientific notation, it is written as 2.1720009 × 10^7.
The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors.
There are 14433120 positive integers (up to 21720009) that are relatively prime to 21720009.
21720009 has 8 divisors, whose sum is 29053792
The reverse of 21720009 is 90002712
Previous prime number is 313
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty-one million seven hundred twenty thousand nine
Scientific notation
2.1720009 × 10^7
Engineering notation
2.1720009 × 10^6
Prime Factorization
3 × 313 × 23131
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21720009
Product of the distinct prime numbers
The prime factorization of 21720009 is 3 × 313 × 23131.
Since it has a total of 3 prime factors.
8 , 9 , 86 , 86 , 203 , 584 , 9367 , 7554 , 78015 , 46596 , 393520 , 5479 , 8304631 , 3345709 , 36453878 , 71982910 , 805729563 , 295307795 , 3940503137 , 5738402366
n×2
43440018
n×3
65160027
n×4
86880036
n×5
108600045
n÷2
10860004.5
n÷3
7240003
n÷3
5430002.25
n÷5
4344001.8
n2
471758790960081
n3
1.0246605185482E+22
n4
2.2255635684812E+29
n5
4.8339260737483E+36
2 √n
4660.4730446597
3 √n
279.0101485241
4 √n
68.267657383711
5 √n
29.334048126994
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
-21720008
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 21720009 can be divided by 8 positive divisors.
The sum of these divisors (counting 21720009) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010110110101111001001
3
Ternary
1111212111020210
4
Quaternary
1102312233021
5
Quinary
21030020014
6
Senary
2053311333
8
Octal
122665711
10
Decimal
21720009
12
Duodecimal
7335549
16
Hexadecimal
14b6bc9
20
Vigesimal
6ff009
36
Base36
cxj9l
md5
28734136abd594d426d5cae84e755baf
sha1
9c50958f5a3ff02bdfe2d0ea8a284dc0888e968c
sha256
fdf3cad128f197b339778429503df601315530995ab15c5212fdb93aa2c81fe3
sha512
cd10e909d7357977d4493b140a133e31e0f751a8f5c81861213fac88afdd42fbc51642dcbc6dc6085d73f077b5dcced4eac178b859e3860a563167461acffe75
ripemd-160
5addd2a68febc9b9770e551601fd58f1d91bed7d
Diameter
43440018
Circumference
136470841.42061
Area
1.4820739519466E+15
Volume
4.2920879433261E+22
Surface area
5.9282958077864E+15
Circumference
136470841.42061
Perimeter
86880036
Area
471758790960081
Diagonal
30716731.302666
Surface area
2830552745760486
Volume
1.0246605185482E+22
Space diagonal
37620159.128853
Perimeter
65160027
Area
2.0427754871503E+14
Altitude
18810079.564427
Surface area
2.0427754871503E+14
Volume
1.2075740017993E+21
Height
10238910.434222