81170091 is an odd 8-digits composite number following 81170090
and preceding 81170092 . In scientific notation, it is written as 8.1170091 × 10^7.
The sum of its digits is 27. It has a total of 2 prime factors and 4 positive divisors.
There are 54113388 positive integers (up to 81170091) that are relatively prime to 81170091.
81170091 has 4 divisors, whose sum is 90189000
The reverse of 81170091 is 19007118
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
eighty-one million one hundred seventy thousand ninety-one
Scientific notation
8.1170091 × 10^7
Engineering notation
8.1170091 × 10^6
Prime Factorization
9 × 9018899
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81170091
Product of the distinct prime numbers
The prime factorization of 81170091 is 9 × 9018899.
Since it has a total of 2 prime factors.
7 , 7 , 50 , 1 , 930 , 271 , 5658 , 2924 , 53737 , 70490 , 995531 , 896593 , 999185 , 2068365 , 28606711 , 49424995 , 786988316 , 159561729 , 4196818710 , 7473038664
n×2
162340182
n×3
243510273
n×4
324680364
n×5
405850455
n÷2
40585045.5
n÷3
27056697
n÷3
20292522.75
n÷5
16234018.2
n2
6588583672948281
n3
5.3479593629433E+23
n4
4.3409434815441E+31
n5
3.5235477742279E+39
2 √n
9009.4445444766
3 √n
432.9775157357
4 √n
94.918093872963
5 √n
38.183805272197
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
-81170090
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 81170091 can be divided by 4 positive divisors.
The sum of these divisors (counting 81170091) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110101101000111010101011
3
Ternary
12122201212102200
4
Quaternary
10311220322223
5
Quinary
131234420331
6
Senary
12015431243
8
Octal
465507253
10
Decimal
81170091
12
Duodecimal
23225523
16
Hexadecimal
4d68eab
20
Vigesimal
157654b
36
Base36
1cbr8r
md5
c6f218ee7813d26a780e0539652911ef
sha1
568879d2b92f8034ec6095a525af5e0447235ca1
sha256
63d23fbe83eca746262136278fa68ba3affb14f04a762bd11997027e3d1aa30d
sha512
affd4f7723e320263845ef8e47ad45745ff9203d36bbae94e3e94986df592e42bf805c1024b77a23ae7678a6ca15178a62ad880083151afda49e93a811e59181
ripemd-160
e85a4a8a77afb97cd9fb262d6504647b890f4bb3
Diameter
162340182
Circumference
510006723.15363
Area
2.0698646064496E+16
Volume
2.2401479795092E+24
Surface area
8.2794584257984E+16
Circumference
510006723.15363
Perimeter
324680364
Area
6588583672948281
Diagonal
114791843.55126
Surface area
39531502037689686
Volume
5.3479593629433E+23
Space diagonal
140590721.66699
Perimeter
243510273
Area
2.8529404178663E+15
Altitude
70295360.833495
Surface area
2.8529404178663E+15
Volume
6.3026305517454E+22
Height
38263947.850419