21204787 is an odd 8-digits prime number following 21204786
and preceding 21204788 . In scientific notation, it is written as 2.1204787 × 10^7.
The sum of its digits is 31. It has a total of 1 prime factors and 2 positive divisors.
There are 21204786 positive integers (up to 21204787) that are relatively prime to 21204787.
21204787 has 2 divisors, whose sum is 21204788
The reverse of 21204787 is 78740212
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million two hundred four thousand seven hundred eighty-seven
Scientific notation
2.1204787 × 10^7
Engineering notation
2.1204787 × 10^6
Prime Factorization
21204787
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21204787
Product of the distinct prime numbers
The prime factorization of 21204787 is 21204787.
Since it has a total of 1 prime factors.
5 , 1 , 25 , 80 , 326 , 671 , 3987 , 4792 , 31736 , 95100 , 199536 , 107115 , 5747816 , 5038468 , 37822548 , 99285197 , 903239020 , 808437665 , 5527273976 , 4097837202
n×2
42409574
n×3
63614361
n×4
84819148
n×5
106023935
n÷2
10602393.5
n÷3
7068262.3333333
n÷3
5301196.75
n÷5
4240957.4
n2
449642991715369
n3
9.5345838653672E+21
n4
2.0217881999875E+29
n5
4.2871588139848E+36
2 √n
4604.8655789284
3 √n
276.78633055192
4 √n
67.859159874909
5 √n
29.19354149722
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21204788
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10602394
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4604.8656875092
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999056817
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21204787 can be divided by 2 positive divisors.
The sum of these divisors (counting 21204787) is 21204788, the average is 10602394.
Base
System
Value
2
Binary
1010000111000111100110011
3
Ternary
1110220022111111
4
Quaternary
1100320330303
5
Quinary
20412023122
6
Senary
2034254151
8
Octal
120707463
10
Decimal
21204787
12
Duodecimal
7127357
16
Hexadecimal
1438f33
20
Vigesimal
6cabj7
36
Base36
cmhpv
md5
ee9904ec63e42dfa04701f20e3f99212
sha1
fd72332a0f79c2260fffe3e03b5c4f06ac52fab6
sha256
281e0f1319d8f5dfd318ed3b8ca95f74fffa3df66c7e89b87433bb855a4e6448
sha512
687f652e6a0e5d69503f59ee1cb7e4332e6864675d86f2e4c40d0e021e7a804e63d8030a2264623963e276badedebaf0ba93e119d2594951de869e60751459ce
ripemd-160
6d305e9861ae46303d54f373ea7d46a12e09189d
Diameter
42409574
Circumference
133233606.12027
Area
1.4125951195111E+15
Volume
3.9938371501964E+22
Surface area
5.6503804780446E+15
Circumference
133233606.12027
Perimeter
84819148
Area
449642991715369
Diagonal
29988097.362633
Surface area
2697857950292214
Volume
9.5345838653672E+21
Space diagonal
36727768.447676
Perimeter
63614361
Area
1.9470112672957E+14
Altitude
18363884.223838
Surface area
1.9470112672957E+14
Volume
1.1236614844988E+21
Height
9996032.4542109