20091805 is an odd 8-digits composite number following 20091804
and preceding 20091806 . In scientific notation, it is written as 2.0091805 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 16073440 positive integers (up to 20091805) that are relatively prime to 20091805.
20091805 has 4 divisors, whose sum is 24110172
The reverse of 20091805 is 50819002
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million ninety-one thousand eight hundred five
Scientific notation
2.0091805 × 10^7
Engineering notation
2.0091805 × 10^6
Prime Factorization
5 × 4018361
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20091805
Product of the distinct prime numbers
The prime factorization of 20091805 is 5 × 4018361.
Since it has a total of 2 prime factors.
7 , 9 , 94 , 83 , 846 , 132 , 3483 , 7910 , 20541 , 95281 , 8573 , 438852 , 4503421 , 3654532 , 5951432 , 93788148 , 957927333 , 366762104 , 5123285206 , 5168091892
n×2
40183610
n×3
60275415
n×4
80367220
n×5
100459025
n÷2
10045902.5
n÷3
6697268.3333333
n÷3
5022951.25
n÷5
4018361
n2
403680628158025
n3
8.1106724632285E+21
n4
1.6295804955006E+29
n5
3.2741213547401E+36
2 √n
4482.3883142807
3 √n
271.85645630338
4 √n
66.950640880283
5 √n
28.880439027431
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20091804
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20091805 can be divided by 4 positive divisors.
The sum of these divisors (counting 20091805) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100101001001110011101
3
Ternary
1101210202202221
4
Quaternary
1030221032131
5
Quinary
20120414210
6
Senary
1554345341
8
Octal
114511635
10
Decimal
20091805
12
Duodecimal
688b251
16
Hexadecimal
132939d
20
Vigesimal
65b9a5
36
Base36
bymxp
md5
617694a6658870bd30bd4e2120a97dc0
sha1
2041e89c6f170233949eb311f52d644f4f424ce4
sha256
7751b71657fa170c5050696af0ad865474b85a8a696277050ed41f6a10781d34
sha512
e958bfad66c1f3cfd32b62a2a4ad5344e74dc6b37d31be0e83a57c775fe87d7934aa5dde47c014f3ede6555dda58ddaed11048a397a9a89607d857fb52986a58
ripemd-160
465ed95c4e922d5e8042b495b380fb3b05c3700b
Diameter
40183610
Circumference
126240533.97072
Area
1.2682000958178E+15
Volume
3.3973905368202E+22
Surface area
5.0728003832711E+15
Circumference
126240533.97072
Perimeter
80367220
Area
403680628158025
Diagonal
28414103.123556
Surface area
2422083768948150
Volume
8.1106724632285E+21
Space diagonal
34800027.075766
Perimeter
60275415
Area
1.7479883950025E+14
Altitude
17400013.537883
Surface area
1.7479883950025E+14
Volume
9.5585191645532E+20
Height
9471367.7078519