21102005 is an odd 8-digits composite number following 21102004
and preceding 21102006 . In scientific notation, it is written as 2.1102005 × 10^7.
The sum of its digits is 11. It has a total of 3 prime factors and 8 positive divisors.
There are 16723408 positive integers (up to 21102005) that are relatively prime to 21102005.
21102005 has 8 divisors, whose sum is 25559712
The reverse of 21102005 is 50020112
Previous prime number is 107
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 11
Digital Root 2
Name
twenty-one million one hundred two thousand five
Scientific notation
2.1102005 × 10^7
Engineering notation
2.1102005 × 10^6
Prime Factorization
5 × 107 × 39443
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21102005
Product of the distinct prime numbers
The prime factorization of 21102005 is 5 × 107 × 39443.
Since it has a total of 3 prime factors.
2 , 4 , 32 , 43 , 988 , 981 , 2876 , 1631 , 97478 , 7455 , 22665 , 432259 , 8796752 , 4604661 , 94085750 , 28178778 , 90082374 , 402246205 , 3144503593 , 2732251930
n×2
42204010
n×3
63306015
n×4
84408020
n×5
105510025
n÷2
10551002.5
n÷3
7034001.6666667
n÷3
5275501.25
n÷5
4220401
n2
445294615020025
n3
9.3966091926256E+21
n4
1.9828729416583E+29
n5
4.1842594729239E+36
2 √n
4593.6918703805
3 √n
276.33840116982
4 √n
67.77677972861
5 √n
29.165185586821
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
-21102004
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 21102005 can be divided by 8 positive divisors.
The sum of these divisors (counting 21102005) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000011111110110110101
3
Ternary
1110201002111202
4
Quaternary
1100133312311
5
Quinary
20400231010
6
Senary
2032142245
8
Octal
120376665
10
Decimal
21102005
12
Duodecimal
7097985
16
Hexadecimal
141fdb5
20
Vigesimal
6bhf05
36
Base36
ckaet
md5
6d725a06ed050b85ae653bdaaf21e3b8
sha1
24a33963e322e89d7dbc4ad6011769adbcfe43a7
sha256
e71e76ad4c1fcc0930e605d9d5d2b7bdea40246d53dff6960fa693087d2a3334
sha512
cc04b3bdcf794b51c72005a3c07c461ed09407571c2ca38f76c15007043d71db9dc2e1be70e02d3f38e24aa16c3afd9729c3fb4c59bee92b2ec75ed926873968
ripemd-160
2cece59cdd9f2c165c90a27471d3edfd1e4012d7
Diameter
42204010
Circumference
132587807.76803
Area
1.39893429123E+15
Volume
3.9360424544276E+22
Surface area
5.59573716492E+15
Circumference
132587807.76803
Perimeter
84408020
Area
445294615020025
Diagonal
29842741.664265
Surface area
2671767690120150
Volume
9.3966091926256E+21
Space diagonal
36549744.801572
Perimeter
63306015
Area
1.9281822438788E+14
Altitude
18274872.400786
Surface area
1.9281822438788E+14
Volume
1.1074010133776E+21
Height
9947580.554755