81342621 is an odd 8-digits composite number following 81342620
and preceding 81342622 . In scientific notation, it is written as 8.1342621 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 6 positive divisors.
There are 54228408 positive integers (up to 81342621) that are relatively prime to 81342621.
81342621 has 6 divisors, whose sum is 117494910
The reverse of 81342621 is 12624318
Previous prime number is 3
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 six hundred twenty-one
Scientific notation
8.1342621 × 10^7
Engineering notation
8.1342621 × 10^6
Prime Factorization
3 × 3 × 9038069
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
27114207
Product of the distinct prime numbers
The prime factorization of 81342621 is 3 × 3 × 9038069.
Since it has a total of 3 prime factors.
8 , 1 , 5 , 32 , 83 , 729 , 5710 , 5788 , 6188 , 13523 , 188057 , 71712 , 978932 , 2647495 , 71023772 , 55437890 , 226706709 , 924506113 , 14215153 , 1208299856
n×2
162685242
n×3
244027863
n×4
325370484
n×5
406713105
n÷2
40671310.5
n÷3
27114207
n÷3
20335655.25
n÷5
16268524.2
n2
6616621991149641
n3
5.3821337492635E+23
n4
4.3779686573765E+31
n5
3.5611544524686E+39
2 √n
9019.0144140033
3 √n
433.28406849538
4 √n
94.968491690683
5 √n
38.200023704102
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81342620
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81342621 can be divided by 6 positive divisors.
The sum of these divisors (counting 81342621) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
100110110010011000010011101
3
Ternary
12200001122002200
4
Quaternary
10312103002131
5
Quinary
131310430441
6
Senary
12023242113
8
Octal
466230235
10
Decimal
81342621
12
Duodecimal
232a9339
16
Hexadecimal
4d9309d
20
Vigesimal
1587gb1
36
Base36
1cfgd9
md5
ecf664fbdce06ee772118b069f584f24
sha1
a36829abe1e98de7655fd70df36cd3cf2773a402
sha256
d8ed00c198c2e9feb9d14aee9db5f3eb7a478d410ef03c8a89664fbe8542bb30
sha512
e5e45a97743f20506e0e8e17cf7fdfba1013616e762b680134218427b1811462da93936f544cb51e107522520fedb8742d74886f326d1b93a5ab863c89959cf1
ripemd-160
0bfdd0c6b595ac9589d6d287426c61821dd718ff
Diameter
162685242
Circumference
511090761.11468
Area
2.0786731038976E+16
Volume
2.2544629129765E+24
Surface area
8.3146924155906E+16
Circumference
511090761.11468
Perimeter
325370484
Area
6616621991149641
Diagonal
115035837.81717
Surface area
39699731946897846
Volume
5.3821337492635E+23
Space diagonal
140889552.39282
Perimeter
244027863
Area
2.8650813657872E+15
Altitude
70444776.19641
Surface area
2.8650813657872E+15
Volume
6.342905452262E+22
Height
38345279.272392