81445841 is an odd 8-digits prime number following 81445840
and preceding 81445842 . In scientific notation, it is written as 8.1445841 × 10^7.
The sum of its digits is 35. It has a total of 1 prime factors and 2 positive divisors.
There are 81445840 positive integers (up to 81445841) that are relatively prime to 81445841.
81445841 has 2 divisors, whose sum is 81445842
The reverse of 81445841 is 14854418
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 35 Digital Root 8
Name
eighty-one million four hundred forty-five thousand eight hundred forty-one
Scientific notation
8.1445841 × 10^7
Engineering notation
8.1445841 × 10^6
Prime Factorization
81445841
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
81445841 Product of the distinct prime numbers
The prime factorization of 81445841 is 81445841.
Since it has a total of 1 prime factors.
3 , 9 , 70 , 80 , 715 , 31 , 6415 , 7903 , 41060 , 16470 , 743959 , 171356 , 6713983 , 9474844 , 61064727 , 24069904 , 574892666 , 288082807 , 7955930991 , 2216503682
n×2
162891682
n×3
244337523
n×4
325783364
n×5
407229205
n÷2
40722920.5
n÷3
27148613.666667
n÷3
20361460.25
n÷5
16289168.2
n2
6633425016197281
n3
5.4026487915463E+23
n4
4.4002327445512E+31
n5
3.5838065647571E+39
2 √n9024.7349545568
3 √n433.46726346723
4 √n94.998605013741
5 √n38.209713597356
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
81445842 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
40722921 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
9024.7350099601 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999754438 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81445841 can be divided by 2 positive divisors.
The sum of these divisors (counting 81445841) is 81445842, the average is 40722921.
Base
System
Value
2
Binary
100110110101100001111010001
3
Ternary
12200020212200122
4
Quaternary
10312230033101
5
Quinary
131322231331
6
Senary
12025400025
8
Octal
466541721
10
Decimal
81445841
12
Duodecimal
23339015
16
Hexadecimal
4dac3d1
20
Vigesimal
1590ec1
36
Base36
1cho0h
md5
72180283a6321415e2f84e463a3b3e10
sha1
26c6b861764e7dd773eb919ce64f8d323efd1fe7
sha256
fdaf486498c40bd378702edd2715555e01d6158c7a48b14502a3ce7605b815e6
sha512
0d216e061c10e2c331e6d19cd76db048da4e358261d798828be7d7c21643515ab2f17f6463b62ffa6a5ef3ac44aef3fbded27ebb46189297be55c3513f5070cc
ripemd-160
31462c09cc9f469b293635701e25e9a2d8400377
Diameter
162891682
Circumference
511739311.50208
Area
2.0839519299024E+16
Volume
2.263056233793E+24
Surface area
8.3358077196097E+16
Circumference
511739311.50208
Perimeter
325783364
Area
6633425016197281
Diagonal
115181812.94108
Surface area
39800550097183686
Volume
5.4026487915463E+23
Space diagonal
141068334.67718
Perimeter
244337523
Area
2.872357289063E+15
Altitude
70534167.338588
Surface area
2.872357289063E+15
Volume
6.3670826614528E+22
Height
38393937.647028