261009 is an odd 6-digits composite number following 261008
and preceding 261010 . In scientific notation, it is written as 2.61009 × 10^5.
The sum of its digits is 18. It has a total of 4 prime factors and 12 positive divisors.
There are 149040 positive integers (up to 261009) that are relatively prime to 261009.
261009 has 12 divisors, whose sum is 395252
The reverse of 261009 is 900162
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 18
Digital Root 9
Name
two hundred sixty-one thousand nine
Scientific notation
2.61009 × 10^5
Engineering notation
2.61009 × 10^3
Prime Factorization
3 × 21 × 3 × 1381
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
87003
Product of the distinct prime numbers
The prime factorization of 261009 is 3 × 21 × 3 × 1381.
Since it has a total of 4 prime factors.
7 , 9 , 77 , 7 , 58 , 222 , 1925 , 1093 , 46424 , 35763 , 69676 , 128020 , 9894588 , 5531334 , 87989477 , 90281233 , 288668836 , 644098464 , 6261994748 , 7742052952
n×2
522018
n×3
783027
n×4
1044036
n×5
1305045
n÷2
130504.5
n÷3
87003
n÷3
65252.25
n÷5
52201.8
n2
68125698081
n3
17781420330423729
n4
4.6411107390236E+21
n5
1.2113716728818E+27
2 √n
510.89039920515
3 √n
63.907499836071
4 √n
22.602884754056
5 √n
12.115214188131
1 , 3 , 9 , 21 , 63 , 189 , 1381 , 4143 , 12429 , 29001 , 87003 , 261009
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-261008
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 261009 can be divided by 12 positive divisors.
The sum of these divisors (counting 261009) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
111111101110010001
3
Ternary
111021001000
4
Quaternary
333232101
5
Quinary
31323014
6
Senary
5332213
8
Octal
775621
10
Decimal
261009
12
Duodecimal
107069
16
Hexadecimal
3fb91
20
Vigesimal
1cca9
36
Base36
5le9
md5
ed25ad0475354bbbb224f270d8f02634
sha1
cbb7a168dafe125b66667d75cec98024c187ebd6
sha256
c1680cb2c19bdbe59237ccafd416f92e90a46a6a4f8b92cba05fec056700cb8d
sha512
ddeb3806635a72157868bcebe8e6dbde98a30e40ab5f92f1fbba85a99753d28a43a59d5b02be52b955405012704b62abb5d91f342c1bdccf7d28acacb274ddbf
ripemd-160
0e7d0330cfadafdd3e304f6333ee8b0841053df5
Diameter
522018
Circumference
1639967.9138416
Area
214023192611.95
Volume
7.4482639307268E+16
Surface area
856092770447.78
Circumference
1639967.9138416
Perimeter
1044036
Area
68125698081
Diagonal
369122.46770144
Surface area
408754188486
Volume
17781420330423729
Space diagonal
452080.84923275
Perimeter
783027
Area
29499292594.347
Altitude
226040.42461637
Surface area
29499292594.347
Volume
2.0955604824618E+15
Height
123040.82256715