21002005 is an odd 8-digits composite number following 21002004
and preceding 21002006 . In scientific notation, it is written as 2.1002005 × 10^7.
The sum of its digits is 10. It has a total of 2 prime factors and 4 positive divisors.
There are 16801600 positive integers (up to 21002005) that are relatively prime to 21002005.
21002005 has 4 divisors, whose sum is 25202412
The reverse of 21002005 is 50020012
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 10
Digital Root 1
Name
twenty-one million two thousand five
Scientific notation
2.1002005 × 10^7
Engineering notation
2.1002005 × 10^6
Prime Factorization
5 × 4200401
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21002005
Product of the distinct prime numbers
The prime factorization of 21002005 is 5 × 4200401.
Since it has a total of 2 prime factors.
9 , 5 , 24 , 91 , 77 , 432 , 3426 , 7777 , 10341 , 15702 , 805534 , 963945 , 396663 , 1418895 , 61948625 , 98588983 , 504825450 , 769431299 , 5612739079 , 461209513
n×2
42004010
n×3
63006015
n×4
84008020
n×5
105010025
n÷2
10501002.5
n÷3
7000668.3333333
n÷3
5250501.25
n÷5
4200401
n2
441084214020025
n3
9.2636528682696E+21
n4
1.9455528385766E+29
n5
4.0860510443551E+36
2 √n
4582.7944531694
3 √n
275.90119774436
4 √n
67.696340027873
5 √n
29.137490941218
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
-21002004
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 21002005 can be divided by 4 positive divisors.
The sum of these divisors (counting 21002005) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000111011100010101
3
Ternary
1110112000100001
4
Quaternary
1100013130111
5
Quinary
20334031010
6
Senary
2030051301
8
Octal
120073425
10
Decimal
21002005
12
Duodecimal
7049b31
16
Hexadecimal
1407715
20
Vigesimal
6b5505
36
Base36
ci591
md5
7c4ef9776645908b8f0580aa35aec5de
sha1
ddadbb0497caef7a0cbfacd0ab980d11d838aa14
sha256
80e84a191afb0f545a9e846b5fc971863312c8bba1e1ec124c7112778be42236
sha512
8f2a3a4a3214abf369163e00a69decfc2e8c5fe0d7d2e5103a28b1d2f4c3447fb5d2bd361e95e127c31a71c4bcbbb7ebc99dcf787255c6ecf1035f21775e7452
ripemd-160
64ea34da2c2047d0de4793310298ea04c1186d0c
Diameter
42004010
Circumference
131959489.23731
Area
1.3857069263797E+15
Volume
3.8803498395149E+22
Surface area
5.542827705519E+15
Circumference
131959489.23731
Perimeter
84008020
Area
441084214020025
Diagonal
29701320.308028
Surface area
2646505284120150
Volume
9.2636528682696E+21
Space diagonal
36376539.720816
Perimeter
63006015
Area
1.9099506727482E+14
Altitude
18188269.860408
Surface area
1.9099506727482E+14
Volume
1.0917319602853E+21
Height
9900440.1026759