21108285 is an odd 8-digits composite number following 21108284
and preceding 21108286 . In scientific notation, it is written as 2.1108285 × 10^7.
The sum of its digits is 27. It has a total of 2 prime factors and 4 positive divisors.
There are 10234080 positive integers (up to 21108285) that are relatively prime to 21108285.
21108285 has 4 divisors, whose sum is 21151424
The reverse of 21108285 is 58280112
Previous prime number is 495
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-one million one hundred eight thousand two hundred eighty-five
Scientific notation
2.1108285 × 10^7
Engineering notation
2.1108285 × 10^6
Prime Factorization
495 × 42643
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21108285
Product of the distinct prime numbers
The prime factorization of 21108285 is 495 × 42643.
Since it has a total of 2 prime factors.
2 , 7 , 15 , 65 , 281 , 980 , 398 , 953 , 82367 , 76205 , 369965 , 284803 , 7475340 , 3733878 , 97590074 , 64975965 , 546303310 , 251889060 , 2745851478 , 4767200641
n×2
42216570
n×3
63324855
n×4
84433140
n×5
105541425
n÷2
10554142.5
n÷3
7036095
n÷3
5277071.25
n÷5
4221657
n2
445559695641225
n3
9.4050010401082E+21
n4
1.985234423799E+29
n5
4.190489400936E+36
2 √n
4594.3753655965
3 √n
276.36581140934
4 √n
67.781821793136
5 √n
29.166921304031
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
-21108284
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 21108285 can be divided by 4 positive divisors.
The sum of these divisors (counting 21108285) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000100001011000111101
3
Ternary
1110201102010100
4
Quaternary
1100201120331
5
Quinary
20400431120
6
Senary
2032231313
8
Octal
120413075
10
Decimal
21108285
12
Duodecimal
709b539
16
Hexadecimal
142163d
20
Vigesimal
6biae5
36
Base36
ckf99
md5
f94f9b4aa60048366402658f889a1e9d
sha1
1b6bc6ee2dd9681b151141656160f708574b5153
sha256
aa17e2eca26719935e0c8bb405f6edbfcd75d54e72583ee014ca2ba6a2cb702f
sha512
cfc181f9a7ff05de4f5be983b72f0c6568e7e77048e5941bea9dc961983773617a9fcfe84ef2b23a135326f058a799f9b2ac5ac62eab0997d4578caf2e6223a1
ripemd-160
3c8fe74c3545e43d28e4ffe86cb0d8908ade76c7
Diameter
42216570
Circumference
132627266.17176
Area
1.3997670665622E+15
Volume
3.9395576232811E+22
Surface area
5.5990682662487E+15
Circumference
132627266.17176
Perimeter
84433140
Area
445559695641225
Diagonal
29851622.925437
Surface area
2673358173847350
Volume
9.4050010401082E+21
Space diagonal
36560622.080644
Perimeter
63324855
Area
1.9293300766388E+14
Altitude
18280311.040322
Surface area
1.9293300766388E+14
Volume
1.1083900020878E+21
Height
9950540.9751455