81304811 is an odd 8-digits composite number following 81304810
and preceding 81304812 . In scientific notation, it is written as 8.1304811 × 10^7.
The sum of its digits is 26. It has a total of 2 prime factors and 4 positive divisors.
There are 69689832 positive integers (up to 81304811) that are relatively prime to 81304811.
81304811 has 4 divisors, whose sum is 92919792
The reverse of 81304811 is 11840318
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8
Name
eighty-one million three hundred four thousand eight hundred eleven
Scientific notation
8.1304811 × 10^7
Engineering notation
8.1304811 × 10^6
Prime Factorization
7 × 11614973
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81304811
Product of the distinct prime numbers
The prime factorization of 81304811 is 7 × 11614973.
Since it has a total of 2 prime factors.
4 , 2 , 32 , 98 , 791 , 747 , 3183 , 8320 , 9590 , 97401 , 803069 , 503909 , 2259041 , 8968400 , 29215463 , 87148222 , 803057825 , 515780163 , 5827242179 , 1719881183
n×2
162609622
n×3
243914433
n×4
325219244
n×5
406524055
n÷2
40652405.5
n÷3
27101603.666667
n÷3
20326202.75
n÷5
16260962.2
n2
6610472291745721
n3
5.3746320030112E+23
n4
4.3698343919938E+31
n5
3.5528855934236E+39
2 √n
9016.9180433228
3 √n
433.21692448401
4 √n
94.957453858677
5 √n
38.196471786302
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
-81304810
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 81304811 can be divided by 4 positive divisors.
The sum of these divisors (counting 81304811) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110110001001110011101011
3
Ternary
12122222201020022
4
Quaternary
10312021303223
5
Quinary
131303223221
6
Senary
12022351055
8
Octal
466116353
10
Decimal
81304811
12
Duodecimal
2328b48b
16
Hexadecimal
4d89ceb
20
Vigesimal
158320b
36
Base36
1cen6z
md5
bf3255c8a27cadc4b4a7dcb79a75c615
sha1
9e425058f40f00b2951f78cb839bd2b1f5c9e9be
sha256
79fbe030949965e99d28a4e2905e51d3b55fe42cd3b1a55a8b191bf45f4a6aba
sha512
d90d8e13df65b1acfa176e5ea1b912d3eb02a444b2bbe3795e75431d5ee19ca5587d5acf150c966761e54f445a42c1662ef43c1d22c8f5507a120c9d8f223031
ripemd-160
e56ddc087b1d444ddbb7018cb9c4c9ac73ded515
Diameter
162609622
Circumference
510853193.87821
Area
2.0767411188507E+16
Volume
2.2513205888545E+24
Surface area
8.3069644754029E+16
Circumference
510853193.87821
Perimeter
325219244
Area
6610472291745721
Diagonal
114982366.40238
Surface area
39662833750474326
Volume
5.3746320030112E+23
Space diagonal
140824063.55178
Perimeter
243914433
Area
2.8624184678325E+15
Altitude
70412031.775892
Surface area
2.8624184678325E+15
Volume
6.3340645595191E+22
Height
38327455.46746