81793911 is an odd 8-digits composite number following 81793910
and preceding 81793912 . In scientific notation, it is written as 8.1793911 × 10^7.
The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors.
There are 51754560 positive integers (up to 81793911) that are relatively prime to 81793911.
81793911 has 16 divisors, whose sum is 114681600
The reverse of 81793911 is 11939718
Previous prime number is 131
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
eighty-one million seven hundred ninety-three thousand nine hundred eleven
Scientific notation
8.1793911 × 10^7
Engineering notation
8.1793911 × 10^6
Prime Factorization
3 × 23 × 131 × 9049
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81793911
Product of the distinct prime numbers
The prime factorization of 81793911 is 3 × 23 × 131 × 9049.
Since it has a total of 4 prime factors.
5 , 7 , 71 , 21 , 576 , 280 , 6560 , 5048 , 14105 , 33240 , 820348 , 629766 , 4739464 , 7289189 , 40217951 , 58525274 , 22137750 , 995461929 , 6445792073 , 2763220032
n×2
163587822
n×3
245381733
n×4
327175644
n×5
408969555
n÷2
40896955.5
n÷3
27264637
n÷3
20448477.75
n÷5
16358782.2
n2
6690243876675921
n3
5.4722121221713E+23
n4
4.47593631294E+31
n5
3.6610433642228E+39
2 √n
9043.9986178681
3 √n
434.08387988481
4 √n
95.099940157016
5 √n
38.242316804126
1 , 3 , 23 , 69 , 131 , 393 , 3013 , 9039 , 9049 , 27147 , 208127 , 624381 , 1185419 , 3556257 , 27264637 , 81793911
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81793910
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81793911 can be divided by 16 positive divisors.
The sum of these divisors (counting 81793911) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100111000000001001101110111
3
Ternary
12200220120011010
4
Quaternary
10320001031313
5
Quinary
131414401121
6
Senary
12041043303
8
Octal
470011567
10
Decimal
81793911
12
Duodecimal
23486533
16
Hexadecimal
4e01377
20
Vigesimal
15b44fb
36
Base36
1cp4l3
md5
11f8759708b16d6c1ee1c8b65d299708
sha1
f950b2f90ab0bbc465843181a42f6fefd5138685
sha256
c795c20a1f1be83e18d51fa52e13df8b6202882deb51a337f21a8cb54b8285ac
sha512
d9598cca6da5b2750d224c351f15600861ebbd144c90f22bda1d4af79e6b7c778b7fce543f39130c084a64256bc2f66a2e3d455367f5ab92dde09f713692decb
ripemd-160
b04c6b97a3efdb7b96b3ce592f7409d6cb681050
Diameter
163587822
Circumference
513926299.81195
Area
2.1018021013689E+16
Volume
2.2921948535864E+24
Surface area
8.4072084054757E+16
Circumference
513926299.81195
Perimeter
327175644
Area
6690243876675921
Diagonal
115674058.25574
Surface area
40141463260055526
Volume
5.4722121221713E+23
Space diagonal
141671209.60177
Perimeter
245381733
Area
2.8969605773573E+15
Altitude
70835604.800883
Surface area
2.8969605773573E+15
Volume
6.4490638327975E+22
Height
38558019.418579