12891491 is an odd 8-digits composite number following 12891490
and preceding 12891492 . In scientific notation, it is written as 1.2891491 × 10^7.
The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors.
There are 12133152 positive integers (up to 12891491) that are relatively prime to 12891491.
12891491 has 4 divisors, whose sum is 13649832
The reverse of 12891491 is 19419821
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8
Name
twelve million eight hundred ninety-one thousand four hundred ninety-one
Scientific notation
1.2891491 × 10^7
Engineering notation
1.2891491 × 10^6
Prime Factorization
17 × 758323
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
12891491
Product of the distinct prime numbers
The prime factorization of 12891491 is 17 × 758323.
Since it has a total of 2 prime factors.
2 , 8 , 68 , 55 , 705 , 682 , 1574 , 8184 , 68387 , 94684 , 744014 , 99147 , 1430918 , 8613350 , 31636710 , 33850204 , 591478485 , 824215248 , 4140378539 , 1399364295
n×2
25782982
n×3
38674473
n×4
51565964
n×5
64457455
n÷2
6445745.5
n÷3
4297163.6666667
n÷3
3222872.75
n÷5
2578298.2
n2
166190540203081
n3
2.1424438533132E+21
n4
2.7619295652992E+28
n5
3.5605390133688E+35
2 √n
3590.4722530609
3 √n
234.47743246438
4 √n
59.920549505665
5 √n
26.427776781865
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
-12891490
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 12891491 can be divided by 4 positive divisors.
The sum of these divisors (counting 12891491) is 1, the average is 0.25.
Base
System
Value
2
Binary
110001001011010101100011
3
Ternary
220020221210122
4
Quaternary
301023111203
5
Quinary
11300011431
6
Senary
1140150455
8
Octal
61132543
10
Decimal
12891491
12
Duodecimal
439842b
16
Hexadecimal
c4b563
20
Vigesimal
40b8eb
36
Base36
7ob4z
md5
39ff5a7eedb409a68761ced039de7c05
sha1
2204f00b064ce7e7664721625687c3ff352695ec
sha256
7e7728953c36deb38d2d32d9083adf32dca680918f503aca425af2720dd45d91
sha512
ddcccb6e2752c3590ece3cc57cb948e9a4197723d0a7b9ab31024c3e2bd4fd7a7fd4676c182cee6173366995179ffcbf20c45cb3f52c4dba36719656e5cba091
ripemd-160
26194c7bd41a8b6e3ff70663a0bbb9b3b4d8b6d4
Diameter
25782982
Circumference
80999626.838838
Area
5.2210298019812E+14
Volume
8.974247827063E+21
Surface area
2.0884119207925E+15
Circumference
80999626.838838
Perimeter
51565964
Area
166190540203081
Diagonal
18231321.411411
Surface area
997143241218486
Volume
2.1424438533132E+21
Space diagonal
22328717.397317
Perimeter
38674473
Area
71962614842264
Altitude
11164358.698658
Surface area
71962614842264
Volume
2.524894294982E+20
Height
6077107.1371369