21001885 is an odd 8-digits composite number following 21001884
and preceding 21001886 . In scientific notation, it is written as 2.1001885 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 15724800 positive integers (up to 21001885) that are relatively prime to 21001885.
21001885 has 8 divisors, whose sum is 21367904
The reverse of 21001885 is 58810012
Previous prime number is 1171
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million one thousand eight hundred eighty-five
Scientific notation
2.1001885 × 10^7
Engineering notation
2.1001885 × 10^6
Prime Factorization
85 × 1171 × 211
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21001885
Product of the distinct prime numbers
The prime factorization of 21001885 is 85 × 1171 × 211.
Since it has a total of 3 prime factors.
7 , 2 , 79 , 40 , 637 , 586 , 8874 , 9305 , 68269 , 28969 , 268307 , 578564 , 7312888 , 4435034 , 97403494 , 23721016 , 659140964 , 539251469 , 9821719119 , 7517717867
n×2
42003770
n×3
63005655
n×4
84007540
n×5
105009425
n÷2
10500942.5
n÷3
7000628.3333333
n÷3
5250471.25
n÷5
4200377
n2
441079173553225
n3
9.2634940788599E+21
n4
1.945508373424E+29
n5
4.0859343125187E+36
2 √n
4582.7813607023
3 √n
275.90067226744
4 √n
67.696243327841
5 √n
29.137457644331
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
-21001884
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 21001885 can be divided by 8 positive divisors.
The sum of these divisors (counting 21001885) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000000111011010011101
3
Ternary
1110112000011121
4
Quaternary
1100013122131
5
Quinary
20334030020
6
Senary
2030050541
8
Octal
120073235
10
Decimal
21001885
12
Duodecimal
7049a51
16
Hexadecimal
140769d
20
Vigesimal
6b54e5
36
Base36
ci55p
md5
7578a5690489faf4237ec46fc996d883
sha1
12b03649498387eb4fc5140c3d6ee27902a2e80f
sha256
8c23cc5d609bcc0032bbe079793711f8b0babf060933114295b30311005639f3
sha512
a0412db1e7e3a7c07e8269a6e99bbf4e16f052ec729f679ca8474c66286e9681b1192387ad90129c3752b12d49d80010290b6c64a5ffc65a07b537b27232cdcf
ripemd-160
364ee2bd07c7281a35addb2e6b11f2ecbae13392
Diameter
42003770
Circumference
131958735.25508
Area
1.3856910912863E+15
Volume
3.8802833259625E+22
Surface area
5.5427643651451E+15
Circumference
131958735.25508
Perimeter
84007540
Area
441079173553225
Diagonal
29701150.6024
Surface area
2646475041319350
Volume
9.2634940788599E+21
Space diagonal
36376331.874719
Perimeter
63005655
Area
1.9099288468867E+14
Altitude
18188165.937359
Surface area
1.9099288468867E+14
Volume
1.0917132467739E+21
Height
9900383.5341334