21691284 is an even 8-digits composite number following 21691283
and preceding 21691285 . In scientific notation, it is written as 2.1691284 × 10^7.
The sum of its digits is 33. It has a total of 4 prime factors and 12 positive divisors.
There are 7230424 positive integers (up to 21691284) that are relatively prime to 21691284.
21691284 has 12 divisors, whose sum is 50613024
The reverse of 21691284 is 48219612
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty-one million six hundred ninety-one thousand two hundred eighty-four
Scientific notation
2.1691284 × 10^7
Engineering notation
2.1691284 × 10^6
Prime Factorization
2 × 2 × 3 × 1807607
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
10845642
Product of the distinct prime numbers
The prime factorization of 21691284 is 2 × 2 × 3 × 1807607.
Since it has a total of 4 prime factors.
8 , 9 , 34 , 98 , 142 , 139 , 3556 , 6862 , 69530 , 46909 , 494635 , 793978 , 5631399 , 1853895 , 40582292 , 41936636 , 69037804 , 277322884 , 7700368179 , 9418573854
n×2
43382568
n×3
65073852
n×4
86765136
n×5
108456420
n÷2
10845642
n÷3
7230428
n÷3
5422821
n÷5
4338256.8
n2
470511801568656
n3
1.0206005113177E+22
n4
2.2138135541538E+29
n5
4.80204585262E+36
2 √n
4657.390256356
3 √n
278.88709605456
4 √n
68.24507496044
5 √n
29.326285085669
1 , 2 , 3 , 4 , 6 , 12 , 1807607 , 3615214 , 5422821 , 7230428 , 10845642 , 21691284
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
-21691283
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 21691284 can be divided by 12 positive divisors.
The sum of these divisors (counting 21691284) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010010101111101110010100
3
Ternary
1111211000211220
4
Quaternary
1102233232110
5
Quinary
21023110114
6
Senary
2052530340
8
Octal
122575624
10
Decimal
21691284
12
Duodecimal
73209b0
16
Hexadecimal
14afb94
20
Vigesimal
6fb844
36
Base36
cwx3o
md5
e4df07a7a4fefc927ca04f6b4749a54a
sha1
16d9446daf37c44f69fae8e44d858675c5b7a642
sha256
f221599d77e29fd27d753e7fd930410bb5be4a31f911a44a477666ece59d5e1b
sha512
e4f52fdab1151cdeba647adf0558bdfb31ddb300a9a5e85b995ec8ed27a21115bee6a0f35cfb449b30192c8843f39cfa6c99480f23dea06527ea68d65c57da38
ripemd-160
299acf3d6a701710cbe81fe6e0ef781e58555ae6
Diameter
43382568
Circumference
136290356.92266
Area
1.4781564192354E+15
Volume
4.2750814248077E+22
Surface area
5.9126256769416E+15
Circumference
136290356.92266
Perimeter
86765136
Area
470511801568656
Diagonal
30676108.018087
Surface area
2823070809411936
Volume
1.0206005113177E+22
Space diagonal
37570405.969406
Perimeter
65073852
Area
2.0373758646942E+14
Altitude
18785202.984703
Surface area
2.0373758646942E+14
Volume
1.202789237392E+21
Height
10225369.339362