12971985 is an odd 8-digits composite number following 12971984
and preceding 12971986 . In scientific notation, it is written as 1.2971985 × 10^7.
The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors.
There are 6386112 positive integers (up to 12971985) that are relatively prime to 12971985.
12971985 has 16 divisors, whose sum is 22352064
The reverse of 12971985 is 58917921
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twelve million nine hundred seventy-one thousand nine hundred eighty-five
Scientific notation
1.2971985 × 10^7
Engineering notation
1.2971985 × 10^6
Prime Factorization
3 × 5 × 13 × 66523
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
12971985
Product of the distinct prime numbers
The prime factorization of 12971985 is 3 × 5 × 13 × 66523.
Since it has a total of 4 prime factors.
5 , 2 , 9 , 1 , 676 , 778 , 6813 , 1220 , 26386 , 70103 , 405666 , 915231 , 870502 , 4463682 , 39940069 , 26353958 , 563646975 , 440138027 , 6278491400 , 6421648768
n×2
25943970
n×3
38915955
n×4
51887940
n×5
64859925
n÷2
6485992.5
n÷3
4323995
n÷3
3242996.25
n÷5
2594397
n2
168272394840225
n3
2.1828269817815E+21
n4
2.8315598865265E+28
n5
3.6730952374623E+35
2 √n
3601.6641986726
3 √n
234.96444308868
4 √n
60.013866719889
5 √n
26.460697477
1 , 3 , 5 , 13 , 15 , 39 , 65 , 195 , 66523 , 199569 , 332615 , 864799 , 997845 , 2594397 , 4323995 , 12971985
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
-12971984
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 12971985 can be divided by 16 positive divisors.
The sum of these divisors (counting 12971985) is 1, the average is 0.0625.
Base
System
Value
2
Binary
110001011110111111010001
3
Ternary
220102001012220
4
Quaternary
301132333101
5
Quinary
11310100420
6
Senary
1142011253
8
Octal
61367721
10
Decimal
12971985
12
Duodecimal
4416b29
16
Hexadecimal
c5efd1
20
Vigesimal
4119j5
36
Base36
7q18x
md5
2637e2a48078b13a62f26000de0e8c5a
sha1
2931382c36db431caf577f56aa7defb14df87d62
sha256
711843b12d6a28fa9efbf9eff03bbac2752e37a1833a52508d458410bc6f9904
sha512
d320825d79b088b7a73a8a5d62f69a911b2fdf5794931ca9bbf01a9f7b4c7b166e63992413187d1bf66579035b682eb3092c2c58ad847dcd1b82669a646d04aa
ripemd-160
0bdd2da058ac92a99ce4c1e57ed7d4a3f6f19802
Diameter
25943970
Circumference
81505385.556954
Area
5.2864331943201E+14
Volume
9.1434042800297E+21
Surface area
2.114573277728E+15
Circumference
81505385.556954
Perimeter
51887940
Area
168272394840225
Diagonal
18345157.1179
Surface area
1009634369041350
Volume
2.1828269817815E+21
Space diagonal
22468137.095021
Perimeter
38915955
Area
72864084343640
Altitude
11234068.547511
Surface area
72864084343640
Volume
2.5724862682911E+20
Height
6115052.3726335