20953821 is an odd 8-digits composite number following 20953820
and preceding 20953822 . In scientific notation, it is written as 2.0953821 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 11973528 positive integers (up to 20953821) that are relatively prime to 20953821.
20953821 has 8 divisors, whose sum is 25087744
The reverse of 20953821 is 12835902
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty million nine hundred fifty-three thousand eight hundred twenty-one
Scientific notation
2.0953821 × 10^7
Engineering notation
2.0953821 × 10^6
Prime Factorization
21 × 7 × 142543
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20953821
Product of the distinct prime numbers
The prime factorization of 20953821 is 21 × 7 × 142543.
Since it has a total of 3 prime factors.
8 , 2 , 81 , 37 , 367 , 585 , 3906 , 668 , 38086 , 18063 , 191086 , 695492 , 1830445 , 3208426 , 62067567 , 21473259 , 194852286 , 847618520 , 5807330235 , 204707693
n×2
41907642
n×3
62861463
n×4
83815284
n×5
104769105
n÷2
10476910.5
n÷3
6984607
n÷3
5238455.25
n÷5
4190764.2
n2
439062614500041
n3
9.2000394320259E+21
n4
1.9277597945161E+29
n5
4.0393933665287E+36
2 √n
4577.534379991
3 √n
275.69004008066
4 √n
67.657478374464
5 √n
29.124108875469
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
-20953820
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 20953821 can be divided by 8 positive divisors.
The sum of these divisors (counting 20953821) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111111011101011011101
3
Ternary
1110102120020110
4
Quaternary
1033323223131
5
Quinary
20331010241
6
Senary
2025040233
8
Octal
117735335
10
Decimal
20953821
12
Duodecimal
7026079
16
Hexadecimal
13fbadd
20
Vigesimal
6aj4b1
36
Base36
ch42l
md5
beab15d8aad81c4d445e30e046be0a6f
sha1
d6b2a6b47cc087ac217b55415ec6316378ed6f88
sha256
11463f905780070ba932d1d8e822e96c6f1399a001b70eb2f32ba9e2be712af9
sha512
7e7be3bf48a594b2c14efacb4023c1302a2970bb9fd76bb0609d2d1d7788edd76eccb1a556c7ce0c27e1a1156f5e6bb53fbce4ee0b65b0237e989d15b9a9950e
ripemd-160
0efabb1513ede1555bd44b933850395dba03a858
Diameter
41907642
Circumference
131656740.23647
Area
1.3793558841793E+15
Volume
3.8537035056518E+22
Surface area
5.517423536717E+15
Circumference
131656740.23647
Perimeter
83815284
Area
439062614500041
Diagonal
29633177.841738
Surface area
2634375687000246
Volume
9.2000394320259E+21
Space diagonal
36293082.584704
Perimeter
62861463
Area
1.9011968900452E+14
Altitude
18146541.292352
Surface area
1.9011968900452E+14
Volume
1.0842350449282E+21
Height
9877725.9472461