12691881 is an odd 8-digits composite number following 12691880
and preceding 12691882 . In scientific notation, it is written as 1.2691881 × 10^7.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 8430624 positive integers (up to 12691881) that are relatively prime to 12691881.
12691881 has 8 divisors, whose sum is 14153160
The reverse of 12691881 is 18819621
Previous prime number is 293
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twelve million six hundred ninety-one thousand eight hundred eighty-one
Scientific notation
1.2691881 × 10^7
Engineering notation
1.2691881 × 10^6
Prime Factorization
9 × 293 × 4813
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
12691881
Product of the distinct prime numbers
The prime factorization of 12691881 is 9 × 293 × 4813.
Since it has a total of 3 prime factors.
3 , 6 , 55 , 43 , 95 , 512 , 7964 , 8368 , 78663 , 25175 , 234674 , 721664 , 2696659 , 5440890 , 78870732 , 40047964 , 377528289 , 728151793 , 8732378839 , 7876178900
n×2
25383762
n×3
38075643
n×4
50767524
n×5
63459405
n÷2
6345940.5
n÷3
4230627
n÷3
3172970.25
n÷5
2538376.2
n2
161083843318161
n3
2.0444569704167E+21
n4
2.594800457815E+28
n5
3.2932898629333E+35
2 √n
3562.5666309558
3 √n
233.26092696679
4 √n
59.687240101682
5 √n
26.345424354716
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-12691880
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 12691881 can be divided by 8 positive divisors.
The sum of these divisors (counting 12691881) is 1, the average is 0.125.
Base
System
Value
2
Binary
110000011010100110101001
3
Ternary
212212210222200
4
Quaternary
300122212221
5
Quinary
11222120011
6
Senary
1132010413
8
Octal
60324651
10
Decimal
12691881
12
Duodecimal
4300a09
16
Hexadecimal
c1a9a9
20
Vigesimal
3j69e1
36
Base36
7k149
md5
f2c2f18b3517d8d5dc7a4a508650c5c6
sha1
5d49c4df7991fb01f620c25334526ab74a4ef8e4
sha256
28a261c5e0fc989a721f66b99319c9be752a20b5ac5f7a0a167582c0bacc68a3
sha512
209f804f2fdf80bba2ee7ac2afa92c417ae3166ea48bcaa26bfe9cf65650c754fd2b69a8262f9036d86f90eb38f3c46bf628569570109663962d02e7e3d89098
ripemd-160
8f104af107138a43f4134994c8109f8601c21609
Diameter
25383762
Circumference
79745440.219672
Area
5.0605981878034E+14
Volume
8.5638013317889E+21
Surface area
2.0242392751214E+15
Circumference
79745440.219672
Perimeter
50767524
Area
161083843318161
Diagonal
17949030.242225
Surface area
966503059908966
Volume
2.0444569704167E+21
Space diagonal
21982982.735618
Perimeter
38075643
Area
69751350226380
Altitude
10991491.367809
Surface area
69751350226380
Volume
2.409415646043E+20
Height
5983010.0807418