21456021 is an odd 8-digits composite number following 21456020
and preceding 21456022 . In scientific notation, it is written as 2.1456021 × 10^7.
The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors.
There are 14304012 positive integers (up to 21456021) that are relatively prime to 21456021.
21456021 has 4 divisors, whose sum is 28608032
The reverse of 21456021 is 12065412
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty-one million four hundred fifty-six thousand twenty-one
Scientific notation
2.1456021 × 10^7
Engineering notation
2.1456021 × 10^6
Prime Factorization
3 × 7152007
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21456021
Product of the distinct prime numbers
The prime factorization of 21456021 is 3 × 7152007.
Since it has a total of 2 prime factors.
6 , 8 , 96 , 68 , 113 , 327 , 2205 , 3275 , 41002 , 30060 , 905838 , 894896 , 9300226 , 4146615 , 56967312 , 83370557 , 779515082 , 283357797 , 5002206705 , 758676825
n×2
42912042
n×3
64368063
n×4
85824084
n×5
107280105
n÷2
10728010.5
n÷3
7152007
n÷3
5364005.25
n÷5
4291204.2
n2
460360837152441
n3
9.8775117895204E+21
n4
2.119321003837E+29
n5
4.5472195964067E+36
2 √n
4632.0644425569
3 √n
277.87516176009
4 √n
68.059271540011
5 √n
29.26239289456
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
-21456020
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 21456021 can be divided by 4 positive divisors.
The sum of these divisors (counting 21456021) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001110110010010010101
3
Ternary
1111101002010110
4
Quaternary
1101312102111
5
Quinary
20443043041
6
Senary
2043513233
8
Octal
121662225
10
Decimal
21456021
12
Duodecimal
7228819
16
Hexadecimal
1476495
20
Vigesimal
6e2011
36
Base36
crvkl
md5
04fae980739a877d9d4ce7abf956a68b
sha1
904087e736245dda54e42fd4a20cd05b9c63d44e
sha256
82f29f0fc03cd26234b0ccb894cbea50bd71cfc145b4c0658fc2791e40ce6a6e
sha512
62329ed7010ba531a233f514c2e84992961a6b11cac4782590cac845e142c5770d1f5a93e18d42e1a82088415ce48f5593064007e502e3ba8f720c8c4a4c3c68
ripemd-160
54b18c284d859eccedae370bc9b81fbbd6b4f28c
Diameter
42912042
Circumference
134812155.89774
Area
1.4462662239986E+15
Volume
4.1374824631605E+22
Surface area
5.7850648959942E+15
Circumference
134812155.89774
Perimeter
85824084
Area
460360837152441
Diagonal
30343395.892762
Surface area
2762165022914646
Volume
9.8775117895204E+21
Space diagonal
37162918.500265
Perimeter
64368063
Area
1.9934208994074E+14
Altitude
18581459.250132
Surface area
1.9934208994074E+14
Volume
1.1640759279367E+21
Height
10114465.297587