21000393 is an odd 8-digits composite number following 21000392
and preceding 21000394 . In scientific notation, it is written as 2.1000393 × 10^7.
The sum of its digits is 18. It has a total of 2 prime factors and 4 positive divisors.
There are 14000256 positive integers (up to 21000393) that are relatively prime to 21000393.
21000393 has 4 divisors, whose sum is 23333780
The reverse of 21000393 is 39300012
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9
Name
twenty-one million three hundred ninety-three
Scientific notation
2.1000393 × 10^7
Engineering notation
2.1000393 × 10^6
Prime Factorization
9 × 2333377
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21000393
Product of the distinct prime numbers
The prime factorization of 21000393 is 9 × 2333377.
Since it has a total of 2 prime factors.
8 , 6 , 62 , 81 , 215 , 642 , 3616 , 3349 , 32355 , 19487 , 455410 , 389612 , 9164299 , 3736166 , 31206326 , 54860717 , 469023650 , 21518923 , 2852138649 , 5693781864
n×2
42000786
n×3
63001179
n×4
84001572
n×5
105001965
n÷2
10500196.5
n÷3
7000131
n÷3
5250098.25
n÷5
4200078.6
n2
441016506154449
n3
9.2615199487303E+21
n4
1.9449555870068E+29
n5
4.0844831694688E+36
2 √n
4582.6185745707
3 √n
275.89413867055
4 √n
67.695040989504
5 √n
29.137043640329
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
-21000392
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 21000393 can be divided by 4 positive divisors.
The sum of these divisors (counting 21000393) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000111000011001001
3
Ternary
1110111221010100
4
Quaternary
1100013003021
5
Quinary
20334003033
6
Senary
2030040013
8
Octal
120070311
10
Decimal
21000393
12
Duodecimal
7049009
16
Hexadecimal
14070c9
20
Vigesimal
6b50jd
36
Base36
ci409
md5
d2c6f7d488ca8efc0caddf2c864eba14
sha1
c5d1f98976d5158e2b9ecfed4f4605a2feb2b01e
sha256
5ffbfadd48ac863067934a569be583572da8b80901fd47bb86303f477caa9cb2
sha512
f11d96e7aee207d6fc4ccaec210d44403cae6960682b3abccc96c847da629d3c5586f2b7282c80049d2d2ab705bb46f1cbb7bbd1f7af4ea38b9e2976d1822c6b
ripemd-160
408d8d765ff9e7b76fd088f8b6678c17b7c63750
Diameter
42000786
Circumference
131949360.7426
Area
1.3854942158467E+15
Volume
3.8794564042675E+22
Surface area
5.5419768633866E+15
Circumference
131949360.7426
Perimeter
84001572
Area
441016506154449
Diagonal
29699040.595765
Surface area
2646099036926694
Volume
9.2615199487303E+21
Space diagonal
36373747.654914
Perimeter
63001179
Area
1.90965748909E+14
Altitude
18186873.827457
Surface area
1.90965748909E+14
Volume
1.091480593307E+21
Height
9899680.1985883