81497445 is an odd 8-digits composite number following 81497444
and preceding 81497446 . In scientific notation, it is written as 8.1497445 × 10^7.
The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors.
There are 43350464 positive integers (up to 81497445) that are relatively prime to 81497445.
81497445 has 16 divisors, whose sum is 130740480
The reverse of 81497445 is 54479418
Previous prime number is 389
Is Prime? no Number parity odd Number length 8 Sum of Digits 42 Digital Root 6
Name
eighty-one million four hundred ninety-seven thousand four hundred forty-five
Scientific notation
8.1497445 × 10^7
Engineering notation
8.1497445 × 10^6
Prime Factorization
3 × 5 × 389 × 13967
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
81497445 Product of the distinct prime numbers
The prime factorization of 81497445 is 3 × 5 × 389 × 13967.
Since it has a total of 4 prime factors.
1 , 2 , 98 , 30 , 564 , 487 , 5465 , 6267 , 27875 , 46588 , 365093 , 716183 , 2891687 , 348640 , 42006630 , 59162231 , 920259373 , 517306253 , 4025361867 , 8137416679
n×2
162994890
n×3
244492335
n×4
325989780
n×5
407487225
n÷2
40748722.5
n÷3
27165815
n÷3
20374361.25
n÷5
16299489
n2
6641833541528025
n3
5.4129246374984E+23
n4
4.4113952793367E+31
n5
3.59517444151E+39
2 √n9027.5935331626
3 √n433.5587922746
4 √n95.013649194011
5 √n38.214554297632
1 , 3 , 5 , 15 , 389 , 1167 , 1945 , 5835 , 13967 , 41901 , 69835 , 209505 , 5433163 , 16299489 , 27165815 , 81497445
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
-81497444 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 81497445 can be divided by 16 positive divisors.
The sum of these divisors (counting 81497445) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110110111000110101100101
3
Ternary
12200100111110220
4
Quaternary
10312320311211
5
Quinary
131330404240
6
Senary
12030434553
8
Octal
466706545
10
Decimal
81497445
12
Duodecimal
23362a59
16
Hexadecimal
4db8d65
20
Vigesimal
15973c5
36
Base36
1cirtx
md5
daa239a3143c26001df824e69aa0dc66
sha1
ff138f4bf44bf17b1cb664801303d8384676c998
sha256
5f794d52ac2864eba9129432f3194d94904c6d44e054ec16b73a33247e74b359
sha512
9691953ada8c6cbf9b81f409252b66d3768cb98f1ad6ec24ab8806e50ccf9a4fcf14962326340d8c70ce88c0ae01b4bf9f7fa73a599a54d169bdb4eba6943eed
ripemd-160
045db0c0ba94dc67f299d3410c461210bd7d743a
Diameter
162994890
Circumference
512063548.99668
Area
2.0865935460431E+16
Volume
2.26736057008E+24
Surface area
8.3463741841723E+16
Circumference
512063548.99668
Perimeter
325989780
Area
6641833541528025
Diagonal
115254792.01776
Surface area
39851001249168150
Volume
5.4129246374984E+23
Space diagonal
141157715.42705
Perimeter
244492335
Area
2.8759982873354E+15
Altitude
70578857.713525
Surface area
2.8759982873354E+15
Volume
6.3791928620447E+22
Height
38418264.005918