12981388 is an even 8-digits composite number following 12981387
and preceding 12981389 . In scientific notation, it is written as 1.2981388 × 10^7.
The sum of its digits is 40. It has a total of 5 prime factors and 24 positive divisors.
There are 5526144 positive integers (up to 12981388) that are relatively prime to 12981388.
12981388 has 24 divisors, whose sum is 26136992
The reverse of 12981388 is 88318921
Previous prime number is 157
Is Prime? no
Number parity even
Number length 8
Sum of Digits 40
Digital Root 4
Name
twelve million nine hundred eighty-one thousand three hundred eighty-eight
Scientific notation
1.2981388 × 10^7
Engineering notation
1.2981388 × 10^6
Prime Factorization
2 × 2 × 7 × 157 × 2953
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
6490694
Product of the distinct prime numbers
The prime factorization of 12981388 is 2 × 2 × 7 × 157 × 2953.
Since it has a total of 5 prime factors.
1 , 9 , 5 , 89 , 728 , 4 , 2373 , 478 , 8229 , 2108 , 483551 , 824338 , 5130730 , 3712000 , 83553833 , 85626780 , 786759574 , 942601149 , 682908631 , 8244363224
n×2
25962776
n×3
38944164
n×4
51925552
n×5
64906940
n÷2
6490694
n÷3
4327129.3333333
n÷3
3245347
n÷5
2596277.6
n2
168516434406544
n3
2.1875772194079E+21
n4
2.8397788665095E+28
n5
3.686427130036E+35
2 √n
3602.9693309824
3 √n
235.02120225181
4 √n
60.024739324569
5 √n
26.464532477238
1 , 2 , 4 , 7 , 14 , 28 , 157 , 314 , 628 , 1099 , 2198 , 2953 , 4396 , 5906 , 11812 , 20671 , 41342 , 82684 , 463621 , 927242 , 1854484 , 3245347 , 6490694 , 12981388
24 divisors
τ
Total Divisors
24
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-12981387
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.041666666666667
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
24
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 12981388 can be divided by 24 positive divisors.
The sum of these divisors (counting 12981388) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
110001100001010010001100
3
Ternary
220102112010011
4
Quaternary
301201102030
5
Quinary
11310401023
6
Senary
1142123004
8
Octal
61412214
10
Decimal
12981388
12
Duodecimal
4420464
16
Hexadecimal
c6148c
20
Vigesimal
412d98
36
Base36
7q8i4
md5
a422490420f2fb1b7015303322614651
sha1
3687b5c7be630c891becec258771b7fa6b6cf185
sha256
eda28ea440a2c16af4d919611374f5200c307bb6a9fab31046b61ea962b583f0
sha512
ea9b4b8a6cea3f4c9d3f35a788e8d2a03d9ee9a4d60e9384ae74291b170cc686edf51372e1d1f8347610ae166ff9d1366b235c6bf7dae07828cb49d916d891ba
ripemd-160
6886069cd7f8a1a688a6540ca0666da63f6b41bb
Diameter
25962776
Circumference
81564466.348397
Area
5.2940999234074E+14
Volume
9.1633020288696E+21
Surface area
2.117639969363E+15
Circumference
81564466.348397
Perimeter
51925552
Area
168516434406544
Diagonal
18358454.968027
Surface area
1011098606439264
Volume
2.1875772194079E+21
Space diagonal
22484423.568765
Perimeter
38944164
Area
72969756575621
Altitude
11242211.784382
Surface area
72969756575621
Volume
2.5780844770209E+20
Height
6119484.9893425