81353249 is an odd 8-digits composite number following 81353248
and preceding 81353250 . In scientific notation, it is written as 8.1353249 × 10^7.
The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors.
There are 81293700 positive integers (up to 81353249) that are relatively prime to 81353249.
81353249 has 4 divisors, whose sum is 81412800
The reverse of 81353249 is 94235318
Previous prime number is 1399
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8
Name
eighty-one million three hundred fifty-three thousand two hundred forty-nine
Scientific notation
8.1353249 × 10^7
Engineering notation
8.1353249 × 10^6
Prime Factorization
1399 × 58151
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81353249
Product of the distinct prime numbers
The prime factorization of 81353249 is 1399 × 58151.
Since it has a total of 2 prime factors.
5 , 7 , 7 , 37 , 264 , 393 , 5093 , 9058 , 61900 , 70151 , 909950 , 484825 , 1634434 , 5192610 , 8495634 , 14102580 , 65030441 , 974696829 , 248295006 , 5080241014
n×2
162706498
n×3
244059747
n×4
325412996
n×5
406766245
n÷2
40676624.5
n÷3
27117749.666667
n÷3
20338312.25
n÷5
16270649.8
n2
6618351122856001
n3
5.3842436686713E+23
n4
4.3802571585409E+31
n5
3.5634815130281E+39
2 √n
9019.6035943937
3 √n
433.30293823624
4 √n
94.971593618269
5 √n
38.201021873648
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
-81353248
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 81353249 can be divided by 4 positive divisors.
The sum of these divisors (counting 81353249) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110110010101101000100001
3
Ternary
12200002011200022
4
Quaternary
10312111220201
5
Quinary
131311300444
6
Senary
12023403225
8
Octal
466255041
10
Decimal
81353249
12
Duodecimal
232b3515
16
Hexadecimal
4d95a21
20
Vigesimal
1589329
36
Base36
1cfokh
md5
e61acd26552221cc49ba76897b30d366
sha1
79491e9808035641f4a93c0bd0de9b5340333f2d
sha256
202d8757275cd37a9f659609d29747bc4cc96aa5be142a3d678be5f505e4af87
sha512
04f53562ed18c8eb589e645311310637ec79622aa2f73bb45e05c025f6d161723ac8461a8c48795b14bd928e2b6992e04cd1be2c55b86140ae6675a0b641eb72
ripemd-160
cc29f8bdaf787315a6cfcc0b3825a71037bc45d3
Diameter
162706498
Circumference
511157538.80812
Area
2.0792163266442E+16
Volume
2.2553467139514E+24
Surface area
8.3168653065769E+16
Circumference
511157538.80812
Perimeter
325412996
Area
6618351122856001
Diagonal
115050868.07892
Surface area
39710106737136006
Volume
5.3842436686713E+23
Space diagonal
140907960.6288
Perimeter
244059747
Area
2.8658301017793E+15
Altitude
70453980.314401
Surface area
2.8658301017793E+15
Volume
6.3453920161304E+22
Height
38350289.359638