81265849 is an odd 8-digits composite number following 81265848
and preceding 81265850 . In scientific notation, it is written as 8.1265849 × 10^7.
The sum of its digits is 43. It has a total of 4 prime factors and 16 positive divisors.
There are 67032000 positive integers (up to 81265849) that are relatively prime to 81265849.
81265849 has 16 divisors, whose sum is 96408576
The reverse of 81265849 is 94856218
Previous prime number is 197
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7
Name
eighty-one million two hundred sixty-five thousand eight hundred forty-nine
Scientific notation
8.1265849 × 10^7
Engineering notation
8.1265849 × 10^6
Prime Factorization
7 × 31 × 197 × 1901
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81265849
Product of the distinct prime numbers
The prime factorization of 81265849 is 7 × 31 × 197 × 1901.
Since it has a total of 4 prime factors.
6 , 5 , 67 , 54 , 48 , 867 , 9217 , 9348 , 3797 , 59022 , 285060 , 976551 , 6964733 , 8498681 , 44623412 , 911793 , 236158325 , 432213636 , 1092002117 , 9385513710
n×2
162531698
n×3
243797547
n×4
325063396
n×5
406329245
n÷2
40632924.5
n÷3
27088616.333333
n÷3
20316462.25
n÷5
16253169.8
n2
6604138213690801
n3
5.3669089884893E+23
n4
4.3614641545531E+31
n5
3.5443808740283E+39
2 √n
9014.7572901327
3 √n
433.14771293916
4 √n
94.946075696327
5 √n
38.192810265506
1 , 7 , 31 , 197 , 217 , 1379 , 1901 , 6107 , 13307 , 42749 , 58931 , 374497 , 412517 , 2621479 , 11609407 , 81265849
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
-81265848
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 81265849 can be divided by 16 positive divisors.
The sum of these divisors (counting 81265849) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110110000000010010111001
3
Ternary
12122220201210021
4
Quaternary
10312000102321
5
Quinary
131301001344
6
Senary
12021450441
8
Octal
466002271
10
Decimal
81265849
12
Duodecimal
23270a21
16
Hexadecimal
4d804b9
20
Vigesimal
157i4c9
36
Base36
1cdt4p
md5
7c88d310a7dae8c260ac693a59897023
sha1
84ea38b3b05c87133a5da38038db403ca283eab4
sha256
11acb0b38dc1a7e58ea8b6c90e7df4d700245c3492e461f40a3d81b95f1006a6
sha512
a99f1dd769179bd2744304ff48a73700bbe62dcb4303502a4b703f5da405f740dd7dda525fac9246b7dde54b9f3f1f6d1e884de75e2f237fa8d94ea6a5ede3eb
ripemd-160
d373dc48ea2b20038a64bee0a5a04dd14dda409a
Diameter
162531698
Circumference
510608388.41227
Area
2.0747512095423E+16
Volume
2.2480855800964E+24
Surface area
8.2990048381691E+16
Circumference
510608388.41227
Perimeter
325063396
Area
6604138213690801
Diagonal
114927265.81356
Surface area
39624829282144806
Volume
5.3669089884893E+23
Space diagonal
140756579.38822
Perimeter
243797547
Area
2.8596757315799E+15
Altitude
70378289.69411
Surface area
2.8596757315799E+15
Volume
6.3249628996197E+22
Height
38309088.604521