81640595 is an odd 8-digits composite number following 81640594
and preceding 81640596 . In scientific notation, it is written as 8.1640595 × 10^7.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 65312472 positive integers (up to 81640595) that are relatively prime to 81640595.
81640595 has 4 divisors, whose sum is 97968720
The reverse of 81640595 is 59504618
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
eighty-one million six hundred forty thousand five hundred ninety-five
Scientific notation
8.1640595 × 10^7
Engineering notation
8.1640595 × 10^6
Prime Factorization
5 × 16328119
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81640595
Product of the distinct prime numbers
The prime factorization of 81640595 is 5 × 16328119.
Since it has a total of 2 prime factors.
2 , 5 , 62 , 77 , 233 , 87 , 1630 , 3475 , 5354 , 87477 , 379792 , 955769 , 4721875 , 9166094 , 54755844 , 94676546 , 521923078 , 768498758 , 1903038134 , 6405781987
n×2
163281190
n×3
244921785
n×4
326562380
n×5
408202975
n÷2
40820297.5
n÷3
27213531.666667
n÷3
20410148.75
n÷5
16328119
n2
6665186751954025
n3
5.4414981221564E+23
n4
4.4424714438423E+31
n5
3.626860119458E+39
2 √n
9035.5185241357
3 √n
433.81249199963
4 √n
95.055344532203
5 √n
38.22796962369
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
-81640594
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 81640595 can be divided by 4 positive divisors.
The sum of these divisors (counting 81640595) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110111011011110010010011
3
Ternary
12200121202211202
4
Quaternary
10313123302103
5
Quinary
131344444340
6
Senary
12033501415
8
Octal
467336223
10
Decimal
81640595
12
Duodecimal
2341186b
16
Hexadecimal
4ddbc93
20
Vigesimal
15a519f
36
Base36
1cluab
md5
78d7a585db2b2f9afdc5420ffab58705
sha1
c85ebfbc35e9f7ac9e85b4119fbd06068a36fadb
sha256
e8130ed250129711a9f8efffb226e16c5d707d9b953015c34f71262b3e96bdee
sha512
22ac176428ccffa7adb2448a813a2dccb523b1722b12e2ea15718ef844e173368911b42bf8e18c1f8dcab050bfbe14961091cd9c80e04e3b5adfab4d991d93dd
ripemd-160
0d5c0f2a2d47d9ec016736b3fb92acceb4f64262
Diameter
163281190
Circumference
512962986.9734
Area
2.0939301734743E+16
Volume
2.2793294033452E+24
Surface area
8.3757206938971E+16
Circumference
512962986.9734
Perimeter
326562380
Area
6665186751954025
Diagonal
115457236.68921
Surface area
39991120511724150
Volume
5.4414981221564E+23
Space diagonal
141405658.50015
Perimeter
244921785
Area
2.8861105240798E+15
Altitude
70702829.250077
Surface area
2.8861105240798E+15
Volume
6.4128670366511E+22
Height
38485745.56307