20821401 is an odd 8-digits composite number following 20821400
and preceding 20821402 . In scientific notation, it is written as 2.0821401 × 10^7.
The sum of its digits is 18. It has a total of 2 prime factors and 4 positive divisors.
There are 13880916 positive integers (up to 20821401) that are relatively prime to 20821401.
20821401 has 4 divisors, whose sum is 21592592
The reverse of 20821401 is 10412802
Previous prime number is 27
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9
Name
twenty million eight hundred twenty-one thousand four hundred one
Scientific notation
2.0821401 × 10^7
Engineering notation
2.0821401 × 10^6
Prime Factorization
27 × 771163
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20821401
Product of the distinct prime numbers
The prime factorization of 20821401 is 27 × 771163.
Since it has a total of 2 prime factors.
10 , 4 , 11 , 84 , 378 , 993 , 1017 , 7747 , 72390 , 74089 , 915711 , 127739 , 7664250 , 1465186 , 6478101 , 92909332 , 260771353 , 880603395 , 4688070929 , 8748955140
n×2
41642802
n×3
62464203
n×4
83285604
n×5
104107005
n÷2
10410700.5
n÷3
6940467
n÷3
5205350.25
n÷5
4164280.2
n2
433530739602801
n3
9.0267173750965E+21
n4
1.8794890218055E+29
n5
3.913359459811E+36
2 √n
4563.0473370326
3 √n
275.10806111314
4 √n
67.550331879515
5 √n
29.087204861173
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
-20821400
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 20821401 can be divided by 4 positive divisors.
The sum of these divisors (counting 20821401) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111011011010110011001
3
Ternary
1110011211121000
4
Quaternary
1033123112121
5
Quinary
20312241101
6
Senary
2022135213
8
Octal
117332631
10
Decimal
20821401
12
Duodecimal
6b81509
16
Hexadecimal
13db599
20
Vigesimal
6a2da1
36
Base36
ce9w9
md5
3bbe231f6bd90fc3dd7ff6184483cd3e
sha1
4c635fff9ab4233ea5a546d0e007292815c66c8d
sha256
b09e424fdaa7c213d8e753501bdc600b10f55a35bff870315c51368e2d5c597a
sha512
f587fc4d6eb8295277507342b1ebb59b6aa8eeafc9db0474b62d84e86bbdc73817f81b04f83e6d086ced260643d7ffa615fca109c36d8357626884d3025f229e
ripemd-160
e5d8f9e7079d1d620f109fa109adccd7e58879b2
Diameter
41642802
Circumference
130824720.83809
Area
1.3619769866415E+15
Volume
3.7811025322179E+22
Surface area
5.447907946566E+15
Circumference
130824720.83809
Perimeter
83285604
Area
433530739602801
Diagonal
29445907.681809
Surface area
2601184437616806
Volume
9.0267173750965E+21
Space diagonal
36063724.416765
Perimeter
62464203
Area
1.8772431690874E+14
Altitude
18031862.208383
Surface area
1.8772431690874E+14
Volume
1.0638088446309E+21
Height
9815302.5606029