81308927 is an odd 8-digits composite number following 81308926
and preceding 81308928 . In scientific notation, it is written as 8.1308927 × 10^7.
The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors.
There are 69580800 positive integers (up to 81308927) that are relatively prime to 81308927.
81308927 has 8 divisors, whose sum is 93074592
The reverse of 81308927 is 72980318
Previous prime number is 641
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
eighty-one million three hundred eight thousand nine hundred twenty-seven
Scientific notation
8.1308927 × 10^7
Engineering notation
8.1308927 × 10^6
Prime Factorization
7 × 641 × 18121
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81308927
Product of the distinct prime numbers
The prime factorization of 81308927 is 7 × 641 × 18121.
Since it has a total of 3 prime factors.
8 , 10 , 38 , 37 , 150 , 612 , 1514 , 9709 , 34806 , 27877 , 351447 , 240614 , 4979689 , 6864177 , 7865326 , 34473415 , 341781869 , 293283149 , 9703448810 , 2542844365
n×2
162617854
n×3
243926781
n×4
325235708
n×5
406544635
n÷2
40654463.5
n÷3
27102975.666667
n÷3
20327231.75
n÷5
16261785.4
n2
6611141609891329
n3
5.3754483054532E+23
n4
4.3707193386037E+31
n5
3.5537849964001E+39
2 √n
9017.1462780638
3 √n
433.22423479669
4 √n
94.958655624771
5 √n
38.196858512481
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81308926
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81308927 can be divided by 8 positive divisors.
The sum of these divisors (counting 81308927) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110001010110011111111
3
Ternary
12122222220212202
4
Quaternary
10312022303333
5
Quinary
131303341202
6
Senary
12022422115
8
Octal
466126377
10
Decimal
81308927
12
Duodecimal
2329193b
16
Hexadecimal
4d8acff
20
Vigesimal
1583c67
36
Base36
1ceqdb
md5
95488e780f523054a605eab70f8b22bb
sha1
4ddd04db11096b590e89751b313392821375a8f3
sha256
ac22f33c6253780c4cf7da6f8059cb77096593c8bdcfcd8d9adb1097b7020773
sha512
0d4a736b5c3c6accdaed34cdd6ab142302260aa74a70bcb2bd4b4e8a9067764cb39952e49f624580492b242e0ec8541726ce650b29333c9c6abba89dbe262baa
ripemd-160
373903c24f647ef96e4543d991a790e2117ca3eb
Diameter
162617854
Circumference
510879055.46894
Area
2.0769513913476E+16
Volume
2.2516625208218E+24
Surface area
8.3078055653906E+16
Circumference
510879055.46894
Perimeter
325235708
Area
6611141609891329
Diagonal
114988187.3054
Surface area
39666849659347974
Volume
5.3754483054532E+23
Space diagonal
140831192.67291
Perimeter
243926781
Area
2.8627082910911E+15
Altitude
70415596.336454
Surface area
2.8627082910911E+15
Volume
6.3350265811728E+22
Height
38329395.768468