21308906 is an even 8-digits composite number following 21308905
and preceding 21308907 . In scientific notation, it is written as 2.1308906 × 10^7.
The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors.
There are 10645740 positive integers (up to 21308906) that are relatively prime to 21308906.
21308906 has 8 divisors, whose sum is 31989504
The reverse of 21308906 is 60980312
Previous prime number is 1471
Is Prime? no
Number parity even
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty-one million three hundred eight thousand nine hundred six
Scientific notation
2.1308906 × 10^7
Engineering notation
2.1308906 × 10^6
Prime Factorization
2 × 1471 × 7243
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21308906
Product of the distinct prime numbers
The prime factorization of 21308906 is 2 × 1471 × 7243.
Since it has a total of 3 prime factors.
4 , 3 , 41 , 85 , 602 , 791 , 3763 , 5911 , 20216 , 27743 , 438295 , 442662 , 9942749 , 6730745 , 17020051 , 66003973 , 593561668 , 38240876 , 412797103 , 5829506460
n×2
42617812
n×3
63926718
n×4
85235624
n×5
106544530
n÷2
10654453
n÷3
7102968.6666667
n÷3
5327226.5
n÷5
4261781.2
n2
454069474916836
n3
9.6757237584722E+21
n4
2.0617908805125E+29
n5
4.3934508064498E+36
2 √n
4616.1570597197
3 √n
277.23861326815
4 √n
67.942306847205
5 √n
29.222154375016
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
-21308905
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 21308906 can be divided by 8 positive divisors.
The sum of these divisors (counting 21308906) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001010010010111101010
3
Ternary
1111002121022202
4
Quaternary
1101102113222
5
Quinary
20423341111
6
Senary
2040420202
8
Octal
121222752
10
Decimal
21308906
12
Duodecimal
7177662
16
Hexadecimal
14525ea
20
Vigesimal
6d3c56
36
Base36
coq22
md5
d3801cae63fe95aaf598e930b0577272
sha1
04d34ae94b63b3fa15f60c7e8b05260ac892b4a5
sha256
b7a203bbff12c3f6e74787f8c969f6094129ace5a507a9a25183fce6555d1a11
sha512
073509005e6b17a0503db433bdb39d221f35efb557b6fd1d0638ab3d3840ed9fa38cba4ca0e72dc581f08848ed0f50e003bde5d20a38909e8b73faace79d75f1
ripemd-160
e7deaf1ba1cc5db4421e6264b51fec06c9447e36
Diameter
42617812
Circumference
133887805.09127
Area
1.4265013266181E+15
Volume
4.0529576903707E+22
Surface area
5.7060053064724E+15
Circumference
133887805.09127
Perimeter
85235624
Area
454069474916836
Diagonal
30135343.864533
Surface area
2724416849501016
Volume
9.6757237584722E+21
Space diagonal
36908107.845709
Perimeter
63926718
Area
1.9661785018052E+14
Altitude
18454053.922855
Surface area
1.9661785018052E+14
Volume
1.1402949804172E+21
Height
10045114.621511