21768909 is an odd 8-digits composite number following 21768908
and preceding 21768910 . In scientific notation, it is written as 2.1768909 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 14158560 positive integers (up to 21768909) that are relatively prime to 21768909.
21768909 has 8 divisors, whose sum is 29733312
The reverse of 21768909 is 90986712
Previous prime number is 41
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twenty-one million seven hundred sixty-eight thousand nine hundred nine
Scientific notation
2.1768909 × 10^7
Engineering notation
2.1768909 × 10^6
Prime Factorization
3 × 41 × 176983
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21768909
Product of the distinct prime numbers
The prime factorization of 21768909 is 3 × 41 × 176983.
Since it has a total of 3 prime factors.
4 , 10 , 84 , 61 , 3 , 71 , 8612 , 2256 , 26102 , 29724 , 45734 , 791680 , 3294846 , 879117 , 51154752 , 95048768 , 448601007 , 439307389 , 4837817436 , 3674006419
n×2
43537818
n×3
65306727
n×4
87075636
n×5
108844545
n÷2
10884454.5
n÷3
7256303
n÷3
5442227.25
n÷5
4353781.8
n2
473885399050281
n3
1.0315968128354E+22
n4
2.2456737143304E+29
n5
4.8885866730951E+36
2 √n
4665.716343714
3 √n
279.21937756687
4 √n
68.306049100457
5 √n
29.347244667679
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21768908
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21768909 can be divided by 8 positive divisors.
The sum of these divisors (counting 21768909) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011000010101011001101
3
Ternary
1111221222022220
4
Quaternary
1103002223031
5
Quinary
21033101114
6
Senary
2054325553
8
Octal
123025315
10
Decimal
21768909
12
Duodecimal
73598b9
16
Hexadecimal
14c2acd
20
Vigesimal
6g1259
36
Base36
cykzx
md5
d122505f91362f57030edb94829932f3
sha1
cf6fa206f7c9a96aeac1d712c66f6c65774d1d43
sha256
5401e3124b03c1a5991f904644d8861e8eadbc808fee353b372a70059d214b4f
sha512
e9cafddcf367b96c32329f23586ce320e6af38b72323dd4943acb1647cd825ae5cfed0cefb8ba41c6f9f5d8c14238d2fbbdf72fb924fea94d8fa5ff431ef1513
ripemd-160
a04f3d19d1d3585c2a539c12e94996e2ed674385
Diameter
43537818
Circumference
136778089.18213
Area
1.4887548882998E+15
Volume
4.3211426248939E+22
Surface area
5.9550195531993E+15
Circumference
136778089.18213
Perimeter
87075636
Area
473885399050281
Diagonal
30785886.345866
Surface area
2843312394301686
Volume
1.0315968128354E+22
Space diagonal
37704856.413343
Perimeter
65306727
Area
2.0519839703003E+14
Altitude
18852428.206672
Surface area
2.0519839703003E+14
Volume
1.2157485030106E+21
Height
10261962.115289