81120889 is an odd 8-digits composite number following 81120888
and preceding 81120890 . In scientific notation, it is written as 8.1120889 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 76349056 positive integers (up to 81120889) that are relatively prime to 81120889.
81120889 has 4 divisors, whose sum is 85892724
The reverse of 81120889 is 98802118
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
eighty-one million one hundred twenty thousand eight hundred eighty-nine
Scientific notation
8.1120889 × 10^7
Engineering notation
8.1120889 × 10^6
Prime Factorization
17 × 4771817
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81120889
Product of the distinct prime numbers
The prime factorization of 81120889 is 17 × 4771817.
Since it has a total of 2 prime factors.
4 , 7 , 85 , 79 , 887 , 785 , 8512 , 5267 , 2644 , 80315 , 71175 , 672306 , 9856017 , 2765802 , 75214163 , 1866239 , 935414960 , 260638614 , 8079461381 , 4655479408
n×2
162241778
n×3
243362667
n×4
324483556
n×5
405604445
n÷2
40560444.5
n÷3
27040296.333333
n÷3
20280222.25
n÷5
16224177.8
n2
6580598632150321
n3
5.3382401119222E+23
n4
4.3304278357459E+31
n5
3.5128815578605E+39
2 √n
9006.7135515681
3 √n
432.89001361381
4 √n
94.903706732498
5 √n
38.179175056188
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
-81120888
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 81120889 can be divided by 4 positive divisors.
The sum of these divisors (counting 81120889) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110101011100111001111001
3
Ternary
12122122100221101
4
Quaternary
10311130321321
5
Quinary
131231332024
6
Senary
12014411401
8
Octal
465347171
10
Decimal
81120889
12
Duodecimal
23200b61
16
Hexadecimal
4d5ce79
20
Vigesimal
1570249
36
Base36
1capa1
md5
4988e1613bab50a062ed1160300c343a
sha1
ba74ba175113f40656239d2c65639646b1052c47
sha256
e0f8094601d02e0bf5de6bdfdcdd1f25820661aec641cea5665a1d9160639ee6
sha512
73ba97cec757159c595962df296e0b4a8b1487894b04a8c80419665c12d6bbee27214a9e9c9602b2ec82350c947addd552be71d3fae12126916ee05f5287bbf1
ripemd-160
0f23b1440db987b590953a9288d62ce15fc84590
Diameter
162241778
Circumference
509697577.87015
Area
2.0673560318986E+16
Volume
2.2360767891617E+24
Surface area
8.2694241275946E+16
Circumference
509697577.87015
Perimeter
324483556
Area
6580598632150321
Diagonal
114722261.41556
Surface area
39483591792901926
Volume
5.3382401119222E+23
Space diagonal
140505501.30316
Perimeter
243362667
Area
2.8494827937757E+15
Altitude
70252750.651578
Surface area
2.8494827937757E+15
Volume
6.2911763045703E+22
Height
38240753.805187