20821497 is an odd 8-digits composite number following 20821496
and preceding 20821498 . In scientific notation, it is written as 2.0821497 × 10^7.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 13792272 positive integers (up to 20821497) that are relatively prime to 20821497.
20821497 has 8 divisors, whose sum is 27939456
The reverse of 20821497 is 79412802
Previous prime number is 157
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty million eight hundred twenty-one thousand four hundred ninety-seven
Scientific notation
2.0821497 × 10^7
Engineering notation
2.0821497 × 10^6
Prime Factorization
3 × 157 × 44207
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20821497
Product of the distinct prime numbers
The prime factorization of 20821497 is 3 × 157 × 44207.
Since it has a total of 3 prime factors.
7 , 2 , 98 , 82 , 540 , 466 , 1555 , 6181 , 15085 , 45930 , 391930 , 640406 , 9654441 , 7854942 , 9428035 , 58282505 , 899605576 , 892275622 , 8071224403 , 5181715346
n×2
41642994
n×3
62464491
n×4
83285988
n×5
104107485
n÷2
10410748.5
n÷3
6940499
n÷3
5205374.25
n÷5
4164299.4
n2
433534737321009
n3
9.0268422325252E+21
n4
1.87952368464E+29
n5
3.913449676116E+36
2 √n
4563.0578563064
3 √n
275.10848392064
4 √n
67.550409741958
5 √n
29.087231683254
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
-20821496
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 20821497 can be divided by 8 positive divisors.
The sum of these divisors (counting 20821497) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111011011010111111001
3
Ternary
1110011211201120
4
Quaternary
1033123113321
5
Quinary
20312241442
6
Senary
2022135453
8
Octal
117332771
10
Decimal
20821497
12
Duodecimal
6b81589
16
Hexadecimal
13db5f9
20
Vigesimal
6a2deh
36
Base36
ce9yx
md5
b2c466bb7c1d06c75ef369dc7c65cb6f
sha1
bbbd64dcedc517b01d4f655f4b4125d837265ebf
sha256
e1f7241c125ea6f2f37d0d973c83cd8518d87d75a636623536f4a3427bb8456e
sha512
0aea8fc224f44325295d2debcb115e7a9a2ba277fae71e5a69de000450d362fa1d12842aff7614df4996a19eedb537c7760316de1e6d05454d9bfc48ba4a9cb2
ripemd-160
3533f2a9cae164bfb60122b3afc64875e2945a89
Diameter
41642994
Circumference
130825324.02388
Area
1.3619895458437E+15
Volume
3.7811548323754E+22
Surface area
5.4479581833746E+15
Circumference
130825324.02388
Perimeter
83285988
Area
433534737321009
Diagonal
29446043.446311
Surface area
2601208423926054
Volume
9.0268422325252E+21
Space diagonal
36063890.693643
Perimeter
62464491
Area
1.877260479715E+14
Altitude
18031945.346821
Surface area
1.877260479715E+14
Volume
1.0638235592199E+21
Height
9815347.8154369