20386721 is an odd 8-digits composite number following 20386720
and preceding 20386722 . In scientific notation, it is written as 2.0386721 × 10^7.
The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors.
There are 20339844 positive integers (up to 20386721) that are relatively prime to 20386721.
20386721 has 4 divisors, whose sum is 20433600
The reverse of 20386721 is 12768302
Previous prime number is 439
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty million three hundred eighty-six thousand seven hundred twenty-one
Scientific notation
2.0386721 × 10^7
Engineering notation
2.0386721 × 10^6
Prime Factorization
439 × 46439
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20386721
Product of the distinct prime numbers
The prime factorization of 20386721 is 439 × 46439.
Since it has a total of 2 prime factors.
3 , 2 , 95 , 45 , 555 , 543 , 2080 , 8504 , 44017 , 61446 , 720471 , 982013 , 4853926 , 3337311 , 45717053 , 50112322 , 377312041 , 602296181 , 6585209986 , 4469618135
n×2
40773442
n×3
61160163
n×4
81546884
n×5
101933605
n÷2
10193360.5
n÷3
6795573.6666667
n÷3
5096680.25
n÷5
4077344.2
n2
415618393131841
n3
8.4730962232472E+21
n4
1.7273864870949E+29
n5
3.5215746371575E+36
2 √n
4515.1656669496
3 √n
273.18014203268
4 √n
67.194982453674
5 √n
28.964729426171
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
-20386720
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 20386721 can be divided by 4 positive divisors.
The sum of these divisors (counting 20386721) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001101110001001110100001
3
Ternary
1102100202022202
4
Quaternary
1031301032201
5
Quinary
20204333341
6
Senary
2004542545
8
Octal
115611641
10
Decimal
20386721
12
Duodecimal
69b1a55
16
Hexadecimal
13713a1
20
Vigesimal
6786g1
36
Base36
c4yht
md5
6747d603628925b90986c461f8e9e9eb
sha1
c3184679d5f04e57d0a7d528bcdf17800e411f9f
sha256
e946626c4d69b21bd16a8bf7334b152a951b58a743a74c3a5e9c5f4684b1abd3
sha512
c14f5076de818228a7e25ea370ba25030a645929c438b68c868ce3a8af86ce9512bc1c57e69f6ade760f6040f60b27ab1732a3f2677037a52e2f63efef250883
ripemd-160
bd3d180d1e09c87200eb27a4afa9eacdecb2fb4f
Diameter
40773442
Circumference
128093545.84877
Area
1.3057036905598E+15
Volume
3.549202246415E+22
Surface area
5.2228147622391E+15
Circumference
128093545.84877
Perimeter
81546884
Area
415618393131841
Diagonal
28831177.330516
Surface area
2493710358791046
Volume
8.4730962232472E+21
Space diagonal
35310836.571731
Perimeter
61160163
Area
1.7996804336612E+14
Altitude
17655418.285866
Surface area
1.7996804336612E+14
Volume
9.9856396618403E+20
Height
9610392.4435055