81129843 is an odd 8-digits composite number following 81129842
and preceding 81129844 . In scientific notation, it is written as 8.1129843 × 10^7.
The sum of its digits is 36. It has a total of 5 prime factors and 20 positive divisors.
There are 53978400 positive integers (up to 81129843) that are relatively prime to 81129843.
81129843 has 20 divisors, whose sum is 121436568
The reverse of 81129843 is 34892118
Previous prime number is 1051
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
eighty-one million one hundred twenty-nine thousand eight hundred forty-three
Scientific notation
8.1129843 × 10^7
Engineering notation
8.1129843 × 10^6
Prime Factorization
9 × 3 × 3 × 1051 × 953
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
27043281
Product of the distinct prime numbers
The prime factorization of 81129843 is 9 × 3 × 3 × 1051 × 953.
Since it has a total of 5 prime factors.
9 , 5 , 45 , 18 , 368 , 912 , 2925 , 278 , 9091 , 38074 , 117754 , 381363 , 1779067 , 7489042 , 50490256 , 52322522 , 261190223 , 676768769 , 1175837495 , 7927153561
n×2
162259686
n×3
243389529
n×4
324519372
n×5
405649215
n÷2
40564921.5
n÷3
27043281
n÷3
20282460.75
n÷5
16225968.6
n2
6582051425204649
n3
5.3400079874478E+23
n4
4.3323400964039E+31
n5
3.5148207184385E+39
2 √n
9007.2106115045
3 √n
432.90594027432
4 √n
94.906325455707
5 √n
38.1800178508
1 , 3 , 9 , 27 , 81 , 953 , 1051 , 2859 , 3153 , 8577 , 9459 , 25731 , 28377 , 77193 , 85131 , 1001603 , 3004809 , 9014427 , 27043281 , 81129843
20 divisors
τ
Total Divisors
20
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81129842
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.05
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
20
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81129843 can be divided by 20 positive divisors.
The sum of these divisors (counting 81129843) is 1, the average is 0.05.
Base
System
Value
2
Binary
100110101011111000101110011
3
Ternary
12122122211020000
4
Quaternary
10311133011303
5
Quinary
131232123333
6
Senary
12014521043
8
Octal
465370563
10
Decimal
81129843
12
Duodecimal
23206183
16
Hexadecimal
4d5f173
20
Vigesimal
15714c3
36
Base36
1caw6r
md5
c6a231c052eb7ba03c84a4af77485dac
sha1
c52d41949fd256cd4e0f01ae9254ec4a7bc5e3fe
sha256
eae10596d229b17d6d1e3023d32f65e3e4ee67e4c177864e919bb40555222368
sha512
1dd47bbc4271367de089fffb76f50bc87f41fce3895f85e84657c8d6022903067392bce73119eb9800025721a0433c041b42cf616992dc7a0dc6a7507da1b1e5
ripemd-160
043f4021fad1a8f61f006c79bdc340c18d17987e
Diameter
162259686
Circumference
509753837.51139
Area
2.0678124402973E+16
Volume
2.2368173151302E+24
Surface area
8.2712497611893E+16
Circumference
509753837.51139
Perimeter
324519372
Area
6582051425204649
Diagonal
114734924.2838
Surface area
39492308551227894
Volume
5.3400079874478E+23
Space diagonal
140521010.08609
Perimeter
243389529
Area
2.8501118716214E+15
Altitude
70260505.043043
Surface area
2.8501118716214E+15
Volume
6.2932597658578E+22
Height
38244974.761267