81330409 is an odd 8-digits prime number following 81330408
and preceding 81330410 . In scientific notation, it is written as 8.1330409 × 10^7.
The sum of its digits is 28. It has a total of 1 prime factors and 2 positive divisors.
There are 81330408 positive integers (up to 81330409) that are relatively prime to 81330409.
81330409 has 2 divisors, whose sum is 81330410
The reverse of 81330409 is 90403318
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
eighty-one million three hundred thirty thousand four hundred nine
Scientific notation
8.1330409 × 10^7
Engineering notation
8.1330409 × 10^6
Prime Factorization
81330409
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
81330409
Product of the distinct prime numbers
The prime factorization of 81330409 is 81330409.
Since it has a total of 1 prime factors.
7 , 4 , 85 , 13 , 72 , 954 , 5533 , 5792 , 89103 , 6950 , 871203 , 780866 , 6186982 , 8674006 , 67439923 , 48974288 , 849861406 , 925058956 , 2880879844 , 8313125275
n×2
162660818
n×3
243991227
n×4
325321636
n×5
406652045
n÷2
40665204.5
n÷3
27110136.333333
n÷3
20332602.25
n÷5
16266081.8
n2
6614635428107281
n3
5.3797100475386E+23
n4
4.3753401846772E+31
n5
3.5584820673393E+39
2 √n
9018.3373744832
3 √n
433.26238437376
4 √n
94.964927075648
5 √n
38.19887663827
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
81330410
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
40665205
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
9018.3374299258
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.999999975409
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81330409 can be divided by 2 positive divisors.
The sum of these divisors (counting 81330409) is 81330410, the average is 40665205.
Base
System
Value
2
Binary
100110110010000000011101001
3
Ternary
12200001000100101
4
Quaternary
10312100003221
5
Quinary
131310033114
6
Senary
12023105401
8
Octal
466200351
10
Decimal
81330409
12
Duodecimal
232a2261
16
Hexadecimal
4d900e9
20
Vigesimal
1586609
36
Base36
1cf6y1
md5
cb9d4c939b76773921917ec0d38f8b62
sha1
4f3f4cb09fc3fa0a1e87d6bfbe7d4b33b289008e
sha256
82d1871cda80003ede38dce81bf22a83b2a70a9b91ebef31098e3887793c1215
sha512
d905e6e099573fde0341104b31f51d92da3f67474c75ac7a3bab9050295f2256264869a979468ab0498204fcf768cf147db1960c0a45d3f2d096d4b47ca4e16d
ripemd-160
62cde6560df9c14cdc3abd6dd6d3bc1f20fd61aa
Diameter
162660818
Circumference
511014030.85571
Area
2.0780490067117E+16
Volume
2.253447675172E+24
Surface area
8.3121960268466E+16
Circumference
511014030.85571
Perimeter
325321636
Area
6614635428107281
Diagonal
115018567.44115
Surface area
39687812568643686
Volume
5.3797100475386E+23
Space diagonal
140868400.58836
Perimeter
243991227
Area
2.8642211587567E+15
Altitude
70434200.294179
Surface area
2.8642211587567E+15
Volume
6.3400490923865E+22
Height
38339522.480384