21307989 is an odd 8-digits composite number following 21307988
and preceding 21307990 . In scientific notation, it is written as 2.1307989 × 10^7.
The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors.
There are 14205324 positive integers (up to 21307989) that are relatively prime to 21307989.
21307989 has 4 divisors, whose sum is 28410656
The reverse of 21307989 is 98970312
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty-one million three hundred seven thousand nine hundred eighty-nine
Scientific notation
2.1307989 × 10^7
Engineering notation
2.1307989 × 10^6
Prime Factorization
3 × 7102663
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21307989
Product of the distinct prime numbers
The prime factorization of 21307989 is 3 × 7102663.
Since it has a total of 2 prime factors.
4 , 5 , 2 , 55 , 932 , 489 , 589 , 2593 , 55216 , 41713 , 866621 , 370082 , 71733 , 8462583 , 58733899 , 63001640 , 575170998 , 90619380 , 2981418623 , 3023540522
n×2
42615978
n×3
63923967
n×4
85231956
n×5
106539945
n÷2
10653994.5
n÷3
7102663
n÷3
5326997.25
n÷5
4261597.8
n2
454030395224121
n3
9.6744746671012E+21
n4
2.0614359978737E+29
n5
4.3925055566897E+36
2 √n
4616.0577336078
3 √n
277.23463634796
4 √n
67.941575884047
5 √n
29.221902863495
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
-21307988
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 21307989 can be divided by 4 positive divisors.
The sum of these divisors (counting 21307989) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001010010001001010101
3
Ternary
1111002120001210
4
Quaternary
1101102021111
5
Quinary
20423323424
6
Senary
2040412033
8
Octal
121221125
10
Decimal
21307989
12
Duodecimal
7177019
16
Hexadecimal
1452255
20
Vigesimal
6d39j9
36
Base36
copcl
md5
a79adb07a4cf78e002ef87565aaadb2b
sha1
30a182658fcbf4864e86c4b81ff043fda2ac4545
sha256
878c91dfb3e1751e8dc83006386b7d065530eb9a5ead7e2f341213c9414ebd83
sha512
53759a5e781af7c9fa899760e555eb4cacb374764706937ed87bd0e4ec89235d785deddf2edb99b2d12eae6a8887d2d7b3105978ba6348a9d4dcae8aac6c2790
ripemd-160
4d8b2bbaa66e7f6e44186fc8551c19c65e85933a
Diameter
42615978
Circumference
133882043.41034
Area
1.4263785541426E+15
Volume
4.0524344722008E+22
Surface area
5.7055142165703E+15
Circumference
133882043.41034
Perimeter
85231956
Area
454030395224121
Diagonal
30134047.030697
Surface area
2724182371344726
Volume
9.6744746671012E+21
Space diagonal
36906519.555119
Perimeter
63923967
Area
1.9660092817719E+14
Altitude
18453259.777559
Surface area
1.9660092817719E+14
Volume
1.1401477735875E+21
Height
10044682.343566