20081385 is an odd 8-digits composite number following 20081384
and preceding 20081386 . In scientific notation, it is written as 2.0081385 × 10^7.
The sum of its digits is 27. It has a total of 6 prime factors and 32 positive divisors.
There are 10145088 positive integers (up to 20081385) that are relatively prime to 20081385.
20081385 has 32 divisors, whose sum is 37584000
The reverse of 20081385 is 58318002
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty million eighty-one thousand three hundred eighty-five
Scientific notation
2.0081385 × 10^7
Engineering notation
2.0081385 × 10^6
Prime Factorization
3 × 5 × 3 × 19 × 3 × 7829
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
2231265
Product of the distinct prime numbers
The prime factorization of 20081385 is 3 × 5 × 3 × 19 × 3 × 7829.
Since it has a total of 6 prime factors.
7 , 9 , 96 , 21 , 966 , 194 , 4157 , 8277 , 39086 , 43916 , 465535 , 748234 , 610704 , 5006879 , 9045736 , 93645522 , 104499977 , 143285770 , 8358412770 , 6728192431
n×2
40162770
n×3
60244155
n×4
80325540
n×5
100406925
n÷2
10040692.5
n÷3
6693795
n÷3
5020346.25
n÷5
4016277
n2
403262023518225
n3
8.0980599501485E+21
n4
1.6262025961201E+29
n5
3.2656400420688E+36
2 √n
4481.2258367549
3 √n
271.80945149849
4 √n
66.941958716152
5 √n
28.877442814575
1 , 3 , 5 , 9 , 15 , 19 , 27 , 45 , 57 , 95 , 135 , 171 , 285 , 513 , 855 , 2565 , 7829 , 23487 , 39145 , 70461 , 117435 , 148751 , 211383 , 352305 , 446253 , 743755 , 1056915 , 1338759 , 2231265 , 4016277 , 6693795 , 20081385
32 divisors
τ
Total Divisors
32
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20081384
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.03125
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
32
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20081385 can be divided by 32 positive divisors.
The sum of these divisors (counting 20081385) is 1, the average is 0.03125.
Base
System
Value
2
Binary
1001100100110101011101001
3
Ternary
1101210020111000
4
Quaternary
1030212223221
5
Quinary
20120101020
6
Senary
1554225213
8
Octal
114465351
10
Decimal
20081385
12
Duodecimal
6885209
16
Hexadecimal
1326ae9
20
Vigesimal
65a395
36
Base36
byew9
md5
88de770257b0eb2fa0a68af18c197382
sha1
ece00b974fded93981c92c203d74229b5ec36a5a
sha256
ac7453d03156be77b8397d372409c8966ed1a5fc304ba6529f2eb0c0609cade0
sha512
57891dc3ec30a55d7cafe2567b97c6468bbb86900e25ed11bc80bf4376b06dc183595d188dade08754688b351eee4066de5e809397e03a9767294f1132b8ee0c
ripemd-160
8d818fe9d13844567c9750329f629c75338a0b3f
Diameter
40162770
Circumference
126175063.17982
Area
1.2668850105566E+15
Volume
3.3921074196955E+22
Surface area
5.0675400422264E+15
Circumference
126175063.17982
Perimeter
80325540
Area
403262023518225
Diagonal
28399367.018236
Surface area
2419572141109350
Volume
8.0980599501485E+21
Space diagonal
34781979.106352
Perimeter
60244155
Area
1.7461757837415E+14
Altitude
17390989.553176
Surface area
1.7461757837415E+14
Volume
9.543655175342E+20
Height
9466455.6727452