21052009 is an odd 8-digits composite number following 21052008
and preceding 21052010 . In scientific notation, it is written as 2.1052009 × 10^7.
The sum of its digits is 19. It has a total of 2 prime factors and 4 positive divisors.
There are 19138180 positive integers (up to 21052009) that are relatively prime to 21052009.
21052009 has 4 divisors, whose sum is 22965840
The reverse of 21052009 is 90025012
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 19
Digital Root 1
Name
twenty-one million fifty-two thousand nine
Scientific notation
2.1052009 × 10^7
Engineering notation
2.1052009 × 10^6
Prime Factorization
11 × 1913819
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21052009
Product of the distinct prime numbers
The prime factorization of 21052009 is 11 × 1913819.
Since it has a total of 2 prime factors.
4 , 6 , 97 , 22 , 362 , 783 , 8794 , 9995 , 69218 , 26262 , 764818 , 416390 , 2437481 , 8586455 , 73381408 , 61167495 , 812039286 , 188574142 , 6270946280 , 8821072848
n×2
42104018
n×3
63156027
n×4
84208036
n×5
105260045
n÷2
10526004.5
n÷3
7017336.3333333
n÷3
5263002.25
n÷5
4210401.8
n2
443187082936081
n3
9.3299784586541E+21
n4
1.9641479048139E+29
n5
4.1349259369474E+36
2 √n
4588.2468329417
3 √n
276.11999001023
4 √n
67.736598917732
5 √n
29.151352527165
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
-21052008
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 21052009 can be divided by 4 positive divisors.
The sum of these divisors (counting 21052009) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000010011101001101001
3
Ternary
1110121112221001
4
Quaternary
1100103221221
5
Quinary
20342131014
6
Senary
2031115001
8
Octal
120235151
10
Decimal
21052009
12
Duodecimal
7072a61
16
Hexadecimal
1413a69
20
Vigesimal
6bba09
36
Base36
cj7u1
md5
942725f7c374b6cc8e25fc35c6b8845d
sha1
c648ac04b2ea3b2b593fc1bcbaf4a7fd2f5c03de
sha256
9af5a3be94ff13313b58c3814b3a42ef733b30d1335066da4317626dc65fde08
sha512
694140e77a4218e600f0578935d755b59b8357103c35997c45d96aa8784fa9e51a0b101373eb91b48cc0a44435b32c0f2eec2a688a9885604807fa21c8762c45
ripemd-160
03e0e68f74685721b55eb9229d9719dbd12ee4f6
Diameter
42104018
Circumference
132273673.63541
Area
1.3923132839179E+15
Volume
3.9081322378478E+22
Surface area
5.5692531356715E+15
Circumference
132273673.63541
Perimeter
84208036
Area
443187082936081
Diagonal
29772036.643
Surface area
2659122497616486
Volume
9.3299784586541E+21
Space diagonal
36463149.189397
Perimeter
63156027
Area
1.9190563622588E+14
Altitude
18231574.594699
Surface area
1.9190563622588E+14
Volume
1.0995485060731E+21
Height
9924012.2143335