81128973 is an odd 8-digits composite number following 81128972
and preceding 81128974 . In scientific notation, it is written as 8.1128973 × 10^7.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 53870000 positive integers (up to 81128973) that are relatively prime to 81128973.
81128973 has 8 divisors, whose sum is 108603936
The reverse of 81128973 is 37982118
Previous prime number is 251
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
eighty-one million one hundred twenty-eight thousand nine hundred seventy-three
Scientific notation
8.1128973 × 10^7
Engineering notation
8.1128973 × 10^6
Prime Factorization
3 × 251 × 107741
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81128973
Product of the distinct prime numbers
The prime factorization of 81128973 is 3 × 251 × 107741.
Since it has a total of 3 prime factors.
1 , 2 , 90 , 52 , 655 , 386 , 6296 , 8816 , 16465 , 76287 , 459880 , 503083 , 6750511 , 8404563 , 40322135 , 86071300 , 562079867 , 289504665 , 88236734 , 4216062259
n×2
162257946
n×3
243386919
n×4
324515892
n×5
405644865
n÷2
40564486.5
n÷3
27042991
n÷3
20282243.25
n÷5
16225794.6
n2
6581910260034729
n3
5.3398361977478E+23
n4
4.332154267115E+31
n5
3.5146322656861E+39
2 √n
9007.1623167344
3 √n
432.90439283916
4 √n
94.906071021481
5 √n
38.179935965376
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81128972
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81128973 can be divided by 8 positive divisors.
The sum of these divisors (counting 81128973) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110101011110111000001101
3
Ternary
12122122210000210
4
Quaternary
10311132320031
5
Quinary
131232111343
6
Senary
12014513033
8
Octal
465367015
10
Decimal
81128973
12
Duodecimal
23205779
16
Hexadecimal
4d5ee0d
20
Vigesimal
157128d
36
Base36
1cavil
md5
695291f88b84b6f493a12e7c7cabaefe
sha1
cf6876d81f850b91411be05fe3b17440e7cba007
sha256
58e5ae317b480df7a75a041d279ca16829fc0a923fcae09490211095b58d6070
sha512
7ad6d0fe77c3008bda0c342a22c2662813233294f802ddb2b7b6da6305028ca8a939ec6aa823ca661545308c8e003076a520d67bbe4d323b5a05100c0530a6b8
ripemd-160
2bf6d3243ebd1a7dd8ca18a5ad325abc7a1cdaaa
Diameter
162257946
Circumference
509748371.14017
Area
2.0677680919512E+16
Volume
2.236745356029E+24
Surface area
8.271072367805E+16
Circumference
509748371.14017
Perimeter
324515892
Area
6581910260034729
Diagonal
114733693.918
Surface area
39491461560208374
Volume
5.3398361977478E+23
Space diagonal
140519503.20188
Perimeter
243386919
Area
2.8500507453098E+15
Altitude
70259751.600942
Surface area
2.8500507453098E+15
Volume
6.2930573097548E+22
Height
38244564.639334