20181358 is an even 8-digits composite number following 20181357
and preceding 20181359 . In scientific notation, it is written as 2.0181358 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 10090678 positive integers (up to 20181358) that are relatively prime to 20181358.
20181358 has 4 divisors, whose sum is 30272040
The reverse of 20181358 is 85318102
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million one hundred eighty-one thousand three hundred fifty-eight
Scientific notation
2.0181358 × 10^7
Engineering notation
2.0181358 × 10^6
Prime Factorization
2 × 10090679
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20181358
Product of the distinct prime numbers
The prime factorization of 20181358 is 2 × 10090679.
Since it has a total of 2 prime factors.
5 , 8 , 85 , 99 , 372 , 414 , 9395 , 7621 , 182 , 22177 , 745480 , 781305 , 5427504 , 49835 , 89544155 , 80638801 , 513540588 , 434874257 , 2394469904 , 2169315460
n×2
40362716
n×3
60544074
n×4
80725432
n×5
100906790
n÷2
10090679
n÷3
6727119.3333333
n÷3
5045339.5
n÷5
4036271.6
n2
407287210724164
n3
8.2196090084458E+21
n4
1.6588287201947E+29
n5
3.3477416262931E+36
2 √n
4492.366636863
3 √n
272.25976301805
4 √n
67.025119446839
5 √n
28.906138372447
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
-20181357
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 20181358 can be divided by 4 positive divisors.
The sum of these divisors (counting 20181358) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100111111000101101110
3
Ternary
1101222022121201
4
Quaternary
1030333011232
5
Quinary
20131300413
6
Senary
2000320114
8
Octal
114770556
10
Decimal
20181358
12
Duodecimal
691303a
16
Hexadecimal
133f16e
20
Vigesimal
662d7i
36
Base36
c0k1a
md5
9eb1f22c82dd53d4c575dac6d1510509
sha1
b9326e8b88df97e3694671706c204e06d1c23d49
sha256
b59f4beccce9ca07b3c307da28c47feac378578a7645e67a0b22c0906cb0e404
sha512
df9ff5a6e8abf3597a59ad47c02abfef427b431f90e126d75cd23c71e11d10a09a6c6cfde83631388aaa23216a5a2cac963a4fa0ac810c5b4a100f0b2003f760
ripemd-160
5fc1fe3b906c91e2a41854b90b053ae9f3a8fd9b
Diameter
40362716
Circumference
126803212.06453
Area
1.2795305091121E+15
Volume
3.4430217701752E+22
Surface area
5.1181220364484E+15
Circumference
126803212.06453
Perimeter
80725432
Area
407287210724164
Diagonal
28540750.190707
Surface area
2443723264344984
Volume
8.2196090084458E+21
Space diagonal
34955137.421737
Perimeter
60544074
Area
1.7636053556182E+14
Altitude
17477568.710868
Surface area
1.7636053556182E+14
Volume
9.6869021142901E+20
Height
9513583.3969023