21000949 is an odd 8-digits composite number following 21000948
and preceding 21000950 . In scientific notation, it is written as 2.1000949 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 20599920 positive integers (up to 21000949) that are relatively prime to 21000949.
21000949 has 8 divisors, whose sum is 21404768
The reverse of 21000949 is 94900012
Previous prime number is 307
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million nine hundred forty-nine
Scientific notation
2.1000949 × 10^7
Engineering notation
2.1000949 × 10^6
Prime Factorization
67 × 307 × 1021
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21000949
Product of the distinct prime numbers
The prime factorization of 21000949 is 67 × 307 × 1021.
Since it has a total of 3 prime factors.
3 , 4 , 53 , 20 , 939 , 956 , 7978 , 6622 , 49394 , 28809 , 850741 , 502671 , 6871691 , 6950829 , 52900489 , 25510565 , 23828057 , 259631449 , 2427588248 , 6306713584
n×2
42001898
n×3
63002847
n×4
84003796
n×5
105004745
n÷2
10500474.5
n÷3
7000316.3333333
n÷3
5250237.25
n÷5
4200189.8
n2
441039858900601
n3
9.2622555837387E+21
n4
1.9451615713906E+29
n5
4.0850238957534E+36
2 √n
4582.679238175
3 √n
275.89657347875
4 √n
67.69548905337
5 √n
29.137197923392
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
-21000948
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 21000949 can be divided by 8 positive divisors.
The sum of these divisors (counting 21000949) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000000111001011110101
3
Ternary
1110111221212221
4
Quaternary
1100013023311
5
Quinary
20334012244
6
Senary
2030042341
8
Octal
120071365
10
Decimal
21000949
12
Duodecimal
70493b1
16
Hexadecimal
14072f5
20
Vigesimal
6b5279
36
Base36
ci4fp
md5
2deb50b8dfdc5a38438c33647c887ee0
sha1
215056728b0856af8b8f139feb7f5a069008fc53
sha256
736211f907d08c421874621cd0f995df700ddb59b13dd11556af5353ae88c587
sha512
6c1b86b96b4929386241397dccdbb96cd42d617b08e08f1af6cbedecc38493ff095219ac272795ceba9fa4235d89643ad7e52a08b8e671f277a3af8f69bf5b74
ripemd-160
663d9c132e8c1dcc0eecbe28be559a6051dce06a
Diameter
42001898
Circumference
131952854.19363
Area
1.3855675806624E+15
Volume
3.8797645463393E+22
Surface area
5.5422703226496E+15
Circumference
131952854.19363
Perimeter
84003796
Area
441039858900601
Diagonal
29699826.898506
Surface area
2646239153403606
Volume
9.2622555837387E+21
Space diagonal
36374710.675163
Perimeter
63002847
Area
1.9097586094471E+14
Altitude
18187355.337581
Surface area
1.9097586094471E+14
Volume
1.0915672887241E+21
Height
9899942.2995019