81497009 is an odd 8-digits composite number following 81497008
and preceding 81497010 . In scientific notation, it is written as 8.1497009 × 10^7.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 74088080 positive integers (up to 81497009) that are relatively prime to 81497009.
81497009 has 4 divisors, whose sum is 82170660
The reverse of 81497009 is 90079418
Previous prime number is 121
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
eighty-one million four hundred ninety-seven thousand nine
Scientific notation
8.1497009 × 10^7
Engineering notation
8.1497009 × 10^6
Prime Factorization
121 × 673529
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81497009
Product of the distinct prime numbers
The prime factorization of 81497009 is 121 × 673529.
Since it has a total of 2 prime factors.
10 , 8 , 70 , 96 , 134 , 564 , 109 , 5551 , 64127 , 37895 , 505499 , 587937 , 6397701 , 3960147 , 68821473 , 77517222 , 283619724 , 332251643 , 7793373554 , 5843293421
n×2
162994018
n×3
244491027
n×4
325988036
n×5
407485045
n÷2
40748504.5
n÷3
27165669.666667
n÷3
20374252.25
n÷5
16299401.8
n2
6641762475946081
n3
5.4128377627804E+23
n4
4.4113008786885E+31
n5
3.5950782741219E+39
2 √n
9027.5693849452
3 √n
433.55801911347
4 √n
95.013522116303
5 √n
38.214513409034
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
-81497008
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 81497009 can be divided by 4 positive divisors.
The sum of these divisors (counting 81497009) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110110111000101110110001
3
Ternary
12200100110212202
4
Quaternary
10312320232301
5
Quinary
131330401014
6
Senary
12030432545
8
Octal
466705661
10
Decimal
81497009
12
Duodecimal
23362755
16
Hexadecimal
4db8bb1
20
Vigesimal
15972a9
36
Base36
1cirht
md5
3e750e66f73a870e72cb6f50e9f2be97
sha1
736eafe38590169deead05e59b44b9c26e18d0ea
sha256
e7d162a488b7b40d8f5baf14495161dc55e0f2b8b0c7b447359faf47cbe8653e
sha512
16e1610f407f0dd4ba9cb62e02025f41fb0cd8cd06ce013b650a7b219452d34b3fd8cb80dbc5ca1c5bc3f2366b2d80e519eb020f14f90528696111deaee8603c
ripemd-160
f4ed0ecc1777392272389098840624ce96cd339b
Diameter
162994018
Circumference
512060809.52788
Area
2.0865712201321E+16
Volume
2.2673241800832E+24
Surface area
8.3462848805282E+16
Circumference
512060809.52788
Perimeter
325988036
Area
6641762475946081
Diagonal
115254175.42064
Surface area
39850574855676486
Volume
5.4128377627804E+23
Space diagonal
141156960.2529
Perimeter
244491027
Area
2.8759675150358E+15
Altitude
70578480.126449
Surface area
2.8759675150358E+15
Volume
6.3790904792077E+22
Height
38418058.473547