12781013 is an odd 8-digits composite number following 12781012
and preceding 12781014 . In scientific notation, it is written as 1.2781013 × 10^7.
The sum of its digits is 23. It has a total of 4 prime factors and 12 positive divisors.
There are 10850112 positive integers (up to 12781013) that are relatively prime to 12781013.
12781013 has 12 divisors, whose sum is 15010380
The reverse of 12781013 is 31018721
Previous prime number is 109
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twelve million seven hundred eighty-one thousand thirteen
Scientific notation
1.2781013 × 10^7
Engineering notation
1.2781013 × 10^6
Prime Factorization
7 × 7 × 109 × 2393
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1825859
Product of the distinct prime numbers
The prime factorization of 12781013 is 7 × 7 × 109 × 2393.
Since it has a total of 4 prime factors.
7 , 7 , 25 , 44 , 319 , 921 , 9554 , 9023 , 71384 , 28205 , 124427 , 102314 , 3637608 , 4429057 , 24093721 , 91040152 , 904913833 , 516078427 , 3203676206 , 9438122901
n×2
25562026
n×3
38343039
n×4
51124052
n×5
63905065
n÷2
6390506.5
n÷3
4260337.6666667
n÷3
3195253.25
n÷5
2556202.6
n2
163354293306169
n3
2.087833346352E+21
n4
2.6684625141558E+28
n5
3.4105654083438E+35
2 √n
3575.0542653224
3 √n
233.80569864318
4 √n
59.791757503208
5 √n
26.382324348182
1 , 7 , 49 , 109 , 763 , 2393 , 5341 , 16751 , 117257 , 260837 , 1825859 , 12781013
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
-12781012
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 12781013 can be divided by 12 positive divisors.
The sum of these divisors (counting 12781013) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
110000110000010111010101
3
Ternary
220001100020212
4
Quaternary
300300113111
5
Quinary
11232443023
6
Senary
1133535205
8
Octal
60602725
10
Decimal
12781013
12
Duodecimal
4344505
16
Hexadecimal
c305d5
20
Vigesimal
3jhcad
36
Base36
7lxw5
md5
6a728a451d315c4ffb02949b909aee36
sha1
c77bc94e3a0cdaf1124c2a78e3b078f53738decf
sha256
c7bf5b5175d2251d0ac2dcb5d21fb9ce65f218b6a164bfe553a846657e34e7f6
sha512
d334fb3808c4daeb9bac0fb607ad6f7e08186c5579ed9f98a48b86483b4fc8ae24eccce3a5e52a7cf85027dab82f3f01d33718891ee0c5aba901055ed0ab5f7e
ripemd-160
460a8b2eab54f308597df6998928105bb0b8c874
Diameter
25562026
Circumference
80305473.092471
Area
5.1319264778301E+14
Volume
8.7454958704255E+21
Surface area
2.0527705911321E+15
Circumference
80305473.092471
Perimeter
51124052
Area
163354293306169
Diagonal
18075081.925467
Surface area
980125759837014
Volume
2.087833346352E+21
Space diagonal
22137363.888198
Perimeter
38343039
Area
70734483910198
Altitude
11068681.944099
Surface area
70734483910198
Volume
2.4605351953215E+20
Height
6025027.3084889