20457621 is an odd 8-digits composite number following 20457620
and preceding 20457622 . In scientific notation, it is written as 2.0457621 × 10^7.
The sum of its digits is 27. It has a total of 2 prime factors and 4 positive divisors.
There are 13638408 positive integers (up to 20457621) that are relatively prime to 20457621.
20457621 has 4 divisors, whose sum is 22730700
The reverse of 20457621 is 12675402
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty million four hundred fifty-seven thousand six hundred twenty-one
Scientific notation
2.0457621 × 10^7
Engineering notation
2.0457621 × 10^6
Prime Factorization
9 × 2273069
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20457621
Product of the distinct prime numbers
The prime factorization of 20457621 is 9 × 2273069.
Since it has a total of 2 prime factors.
4 , 5 , 32 , 51 , 20 , 905 , 6019 , 487 , 1468 , 3490 , 674764 , 459332 , 6178616 , 3434544 , 91440764 , 88056687 , 841097627 , 701233636 , 3979303697 , 3196534523
n×2
40915242
n×3
61372863
n×4
81830484
n×5
102288105
n÷2
10228810.5
n÷3
6819207
n÷3
5114405.25
n÷5
4091524.2
n2
418514256979641
n3
8.5618060523861E+21
n4
1.7515418329522E+29
n5
3.5832378984182E+36
2 √n
4523.0101702296
3 √n
273.49646006512
4 √n
67.253328320831
5 √n
28.984847899344
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
-20457620
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 20457621 can be divided by 4 positive divisors.
The sum of these divisors (counting 20457621) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110000010100010010101
3
Ternary
1102111100120200
4
Quaternary
1032002202111
5
Quinary
20214120441
6
Senary
2010251113
8
Octal
116024225
10
Decimal
20457621
12
Duodecimal
6a26a99
16
Hexadecimal
1382895
20
Vigesimal
67h411
36
Base36
c6h79
md5
7d6c15343486298d95f17115023c78db
sha1
e6f4e601421e6c99206b57721deafbcabc51a65d
sha256
6e57c0f3a32e2180c3f7809e3dbb12a78eb720e8737230394166fdedb7506fc4
sha512
cb3e61769e84f20aeec17cbf8ad691c81ad9b1024fbf744ddb08ac3fabc936e9b9a2ab223324b93b94fb2e9c1f1b457c6f95b5283bb87a62b1f84097d50a8b3f
ripemd-160
fa717d70d11ed7e610443dbe88cb21af49096793
Diameter
40915242
Circumference
128539023.68705
Area
1.3148013151498E+15
Volume
3.5863609327516E+22
Surface area
5.2592052605993E+15
Circumference
128539023.68705
Perimeter
81830484
Area
418514256979641
Diagonal
28931445.072089
Surface area
2511085541877846
Volume
8.5618060523861E+21
Space diagonal
35433638.973988
Perimeter
61372863
Area
1.8122198919517E+14
Altitude
17716819.486994
Surface area
1.8122198919517E+14
Volume
1.0090185198077E+21
Height
9643815.0240295