81342009 is an odd 8-digits composite number following 81342008
and preceding 81342010 . In scientific notation, it is written as 8.1342009 × 10^7.
The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors.
There are 46480392 positive integers (up to 81342009) that are relatively prime to 81342009.
81342009 has 12 divisors, whose sum is 113868368
The reverse of 81342009 is 90024318
Previous prime number is 21
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
eighty-one million three hundred forty-two thousand nine
Scientific notation
8.1342009 × 10^7
Engineering notation
8.1342009 × 10^6
Prime Factorization
3 × 21 × 21 × 61483
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
3873429
Product of the distinct prime numbers
The prime factorization of 81342009 is 3 × 21 × 21 × 61483.
Since it has a total of 4 prime factors.
6 , 7 , 88 , 27 , 340 , 371 , 3534 , 470 , 83657 , 92524 , 999400 , 214168 , 6599925 , 7701887 , 55675225 , 72932914 , 211657621 , 402578425 , 1122057623 , 3193840612
n×2
162684018
n×3
244026027
n×4
325368036
n×5
406710045
n÷2
40671004.5
n÷3
27114003
n÷3
20335502.25
n÷5
16268401.8
n2
6616522428156081
n3
5.3820122689977E+23
n4
4.3778369042292E+31
n5
3.5610204886435E+39
2 √n
9018.9804856203
3 √n
433.28298185506
4 √n
94.968313060833
5 √n
38.199966222588
1 , 3 , 21 , 63 , 441 , 1323 , 61483 , 184449 , 1291143 , 3873429 , 27114003 , 81342009
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81342008
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81342009 can be divided by 12 positive divisors.
The sum of these divisors (counting 81342009) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
100110110010010111000111001
3
Ternary
12200001121021000
4
Quaternary
10312102320321
5
Quinary
131310421014
6
Senary
12023235213
8
Octal
466227071
10
Decimal
81342009
12
Duodecimal
232a8b09
16
Hexadecimal
4d92e39
20
Vigesimal
1587f09
36
Base36
1cffw9
md5
d499ca496f598115b4ec99929abb3018
sha1
5dfdd1b5a9fe46c76aa4507acb7a437ad2bf7d46
sha256
3f7d4a40f2496089b3015836ba642787f739f1ed624beee46222b0b0d8fc6d78
sha512
9d132f610a43013f7e8be628fc631a210558ec24e10d0195fe17996c159d5f04e04d4331df5945d5334a768a2d89ea67e78cd224ffb6f03934fa8b8c9bd8f098
ripemd-160
24e6da2275370f3c31b7c05b68146c681a42f65b
Diameter
162684018
Circumference
511086915.80527
Area
2.0786418252607E+16
Volume
2.2544120274418E+24
Surface area
8.3145673010429E+16
Circumference
511086915.80527
Perimeter
325368036
Area
6616522428156081
Diagonal
115034972.31847
Surface area
39699134568936486
Volume
5.3820122689977E+23
Space diagonal
140888492.37772
Perimeter
244026027
Area
2.8650382537463E+15
Altitude
70444246.188862
Surface area
2.8650382537463E+15
Volume
6.3427622863958E+22
Height
38344990.772825