21000490 is an even 8-digits composite number following 21000489
and preceding 21000491 . In scientific notation, it is written as 2.1000490 × 10^7.
The sum of its digits is 16. It has a total of 4 prime factors and 16 positive divisors.
There are 7200144 positive integers (up to 21000490) that are relatively prime to 21000490.
21000490 has 16 divisors, whose sum is 43201152
The reverse of 21000490 is 09400012
Previous prime number is 7
Is Prime? no
Number parity even
Number length 8
Sum of Digits 16
Digital Root 7
Name
twenty-one million four hundred ninety
Scientific notation
2.1000490 × 10^7
Engineering notation
2.1000490 × 10^6
Prime Factorization
2 × 5 × 7 × 300007
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21000490
Product of the distinct prime numbers
The prime factorization of 21000490 is 2 × 5 × 7 × 300007.
Since it has a total of 4 prime factors.
8 , 9 , 96 , 48 , 547 , 919 , 5446 , 6276 , 90575 , 8921 , 474422 , 535892 , 1777389 , 7825690 , 21403896 , 55701748 , 620876557 , 206068706 , 3212108570 , 7867418503
n×2
42000980
n×3
63001470
n×4
84001960
n×5
105002450
n÷2
10500245
n÷3
7000163.3333333
n÷3
5250122.5
n÷5
4200098
n2
441020580240100
n3
9.2616482851264E+21
n4
1.9449915219531E+29
n5
4.0845775006862E+36
2 √n
4582.6291580271
3 √n
275.89456345134
4 √n
67.69511915956
5 √n
29.137070556854
1 , 2 , 5 , 7 , 10 , 14 , 35 , 70 , 300007 , 600014 , 1500035 , 2100049 , 3000070 , 4200098 , 10500245 , 21000490
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21000489
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21000490 can be divided by 16 positive divisors.
The sum of these divisors (counting 21000490) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010000000111000100101010
3
Ternary
1110111221020221
4
Quaternary
1100013010222
5
Quinary
20334003430
6
Senary
2030040254
8
Octal
120070452
10
Decimal
21000490
12
Duodecimal
704908a
16
Hexadecimal
140712a
20
Vigesimal
6b514a
36
Base36
ci42y
md5
e4139812ea27c7799bcdbae4a803f33c
sha1
22d33627fc7bd9a84e4a6c078206b86c1c185dba
sha256
0106c3be42d326edec69cb78059da34ccf02bc5f82561a2b8c9a698264b1104a
sha512
2513bc44f4de4775aa059dc260a3102977483d9edb2b07f13748a0659c77c7f6c4d235e3e95a2962df2a5b0c79d5558580c4cba2312dacda7aee06e1170e8f07
ripemd-160
ce370bca95495ffeea8a80d7a1c84b7fb9a65027
Diameter
42000980
Circumference
131949970.21157
Area
1.3855070149642E+15
Volume
3.8795101616914E+22
Surface area
5.5420280598568E+15
Circumference
131949970.21157
Perimeter
84001960
Area
441020580240100
Diagonal
29699177.774481
Surface area
2646123481440600
Volume
9.2616482851264E+21
Space diagonal
36373915.663842
Perimeter
63001470
Area
1.9096751303984E+14
Altitude
18186957.831921
Surface area
1.9096751303984E+14
Volume
1.0914957178963E+21
Height
9899725.9248269