21493729 is an odd 8-digits composite number following 21493728
and preceding 21493730 . In scientific notation, it is written as 2.1493729 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 20229376 positive integers (up to 21493729) that are relatively prime to 21493729.
21493729 has 4 divisors, whose sum is 22758084
The reverse of 21493729 is 92739412
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty-one million four hundred ninety-three thousand seven hundred twenty-nine
Scientific notation
2.1493729 × 10^7
Engineering notation
2.1493729 × 10^6
Prime Factorization
17 × 1264337
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21493729
Product of the distinct prime numbers
The prime factorization of 21493729 is 17 × 1264337.
Since it has a total of 2 prime factors.
4 , 6 , 42 , 58 , 303 , 333 , 7280 , 975 , 20182 , 84709 , 433845 , 308828 , 5132104 , 7714426 , 16182370 , 67546260 , 474634332 , 897987693 , 741279963 , 9281623346
n×2
42987458
n×3
64481187
n×4
85974916
n×5
107468645
n÷2
10746864.5
n÷3
7164576.3333333
n÷3
5373432.25
n÷5
4298745.8
n2
461980386325441
n3
9.9296812269943E+21
n4
2.134258773494E+29
n5
4.5873179693353E+36
2 √n
4636.1329791109
3 √n
278.0378508923
4 √n
68.089154636483
5 √n
29.272671141764
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
-21493728
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 21493729 can be divided by 4 positive divisors.
The sum of these divisors (counting 21493729) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001111111011111100001
3
Ternary
1111102222212001
4
Quaternary
1101333133201
5
Quinary
21000244404
6
Senary
2044404001
8
Octal
121773741
10
Decimal
21493729
12
Duodecimal
7246601
16
Hexadecimal
147f7e1
20
Vigesimal
6e6e69
36
Base36
csoo1
md5
bcfc99a2099ecf2cb25a0f71772d5854
sha1
b400950fcbf91f3d19522ef4f6560a914f841870
sha256
d6fef1910883009299cea59e5d2168df0c41a860fca1abcc6af5788fad351f6d
sha512
2d074de23c6b301002cb0010d316e7a237c24b140f33b77f4abc439b9f5bfa0797bb4ed40dce608cf58d0ab8a096bcbf0af713df6bf85755f7272b8ea259e97f
ripemd-160
a2e594594fb91b421e7b31edc053745eed8b6018
Diameter
42987458
Circumference
135049082.2493
Area
1.4513541877826E+15
Volume
4.1593351460285E+22
Surface area
5.8054167511303E+15
Circumference
135049082.2493
Perimeter
85974916
Area
461980386325441
Diagonal
30396723.057772
Surface area
2771882317952646
Volume
9.9296812269943E+21
Space diagonal
37228230.672117
Perimeter
64481187
Area
2.0004337530399E+14
Altitude
18614115.336058
Surface area
2.0004337530399E+14
Volume
1.1702241551047E+21
Height
10132241.019257