21282021 is an odd 8-digits composite number following 21282020
and preceding 21282022 . In scientific notation, it is written as 2.1282021 × 10^7.
The sum of its digits is 18. It has a total of 4 prime factors and 10 positive divisors.
There are 14187960 positive integers (up to 21282021) that are relatively prime to 21282021.
21282021 has 10 divisors, whose sum is 31791782
The reverse of 21282021 is 12028212
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9
Name
twenty-one million two hundred eighty-two thousand twenty-one
Scientific notation
2.1282021 × 10^7
Engineering notation
2.1282021 × 10^6
Prime Factorization
3 × 3 × 9 × 262741
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
7094007
Product of the distinct prime numbers
The prime factorization of 21282021 is 3 × 3 × 9 × 262741.
Since it has a total of 4 prime factors.
5 , 7 , 87 , 45 , 368 , 921 , 5434 , 7585 , 49397 , 10613 , 566432 , 14597 , 6030986 , 8046691 , 39761275 , 2613478 , 77495776 , 983173217 , 2641381825 , 9461306310
n×2
42564042
n×3
63846063
n×4
85128084
n×5
106410105
n÷2
10641010.5
n÷3
7094007
n÷3
5320505.25
n÷5
4256404.2
n2
452924417844441
n3
9.6391469719782E+21
n4
2.0514052827973E+29
n5
4.3658050308002E+36
2 √n
4613.2440863236
3 √n
277.12196881624
4 √n
67.920866354336
5 √n
29.214776854933
10 divisors
τ
Total Divisors
10
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21282020
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.1
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
10
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21282021 can be divided by 10 positive divisors.
The sum of these divisors (counting 21282021) is 1, the average is 0.1.
Base
System
Value
2
Binary
1010001001011110011100101
3
Ternary
1111001020110000
4
Quaternary
1101023303211
5
Quinary
20422011041
6
Senary
2040051513
8
Octal
121136345
10
Decimal
21282021
12
Duodecimal
7163b99
16
Hexadecimal
144bce5
20
Vigesimal
6d0511
36
Base36
co5b9
md5
94cb49da61d1a26eb8300134b54e6346
sha1
d2061607e7fa3a32a0f9c791d66f294c32deb0a6
sha256
89a7ef7d3861e7553d89b965969fa216932f9439dddd6f7376514b383f2207f0
sha512
9e3323bc2138c8134971c4e372ea7382869ac8455113d176bb59bd932ea222e1dcc76715708f867a6ac97b4416c1a45a9e8a2b7971c5f2a3b68041210a6626ad
ripemd-160
a56ccc74b2e9e11df1d17dafbd8625a2f68aa942
Diameter
42564042
Circumference
133718881.65429
Area
1.4229040237315E+15
Volume
4.0376364418719E+22
Surface area
5.6916160949261E+15
Circumference
133718881.65429
Perimeter
85128084
Area
452924417844441
Diagonal
30097322.732909
Surface area
2717546507066646
Volume
9.6391469719782E+21
Space diagonal
36861541.659748
Perimeter
63846063
Area
1.9612202592378E+14
Altitude
18430770.829874
Surface area
1.9612202592378E+14
Volume
1.1359843647899E+21
Height
10032440.91097