20408865 is an odd 8-digits composite number following 20408864
and preceding 20408866 . In scientific notation, it is written as 2.0408865 × 10^7.
The sum of its digits is 33. It has a total of 2 prime factors and 4 positive divisors.
There are 10884720 positive integers (up to 20408865) that are relatively prime to 20408865.
20408865 has 4 divisors, whose sum is 21769472
The reverse of 20408865 is 56880402
Previous prime number is 15
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty million four hundred eight thousand eight hundred sixty-five
Scientific notation
2.0408865 × 10^7
Engineering notation
2.0408865 × 10^6
Prime Factorization
15 × 1360591
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20408865
Product of the distinct prime numbers
The prime factorization of 20408865 is 15 × 1360591.
Since it has a total of 2 prime factors.
4 , 2 , 84 , 89 , 636 , 324 , 8932 , 6881 , 11303 , 68027 , 607152 , 521571 , 2791493 , 7916065 , 97005551 , 39751325 , 406131885 , 685529369 , 1750218415 , 497007830
n×2
40817730
n×3
61226595
n×4
81635460
n×5
102044325
n÷2
10204432.5
n÷3
6802955
n÷3
5102216.25
n÷5
4081773
n2
416521770588225
n3
8.5007365854961E+21
n4
1.7349038537395E+29
n5
3.5407418538949E+36
2 √n
4517.6171816567
3 √n
273.27901541438
4 √n
67.213221777093
5 √n
28.971018975896
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
-20408864
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 20408865 can be divided by 4 positive divisors.
The sum of these divisors (counting 20408865) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001101110110101000100001
3
Ternary
1102101212200220
4
Quaternary
1031312220201
5
Quinary
20211040430
6
Senary
2005233253
8
Octal
115665041
10
Decimal
20408865
12
Duodecimal
6a02829
16
Hexadecimal
1376a21
20
Vigesimal
67b235
36
Base36
c5fkx
md5
b2ca24b13514f4f07a6fee72964e0ec0
sha1
98b60b119b0281013043b7f8cba59b1038759875
sha256
9cf11c502010a4222253561a1a12592f38c1d0e9d5a5d7635143531d90fafa5c
sha512
b11e12ed259837e939601efa3f012a5bc487db7daf1b7cd0685bc312f12870df3248de746784d7a5f1464aba9c45ddffd425c540503c7793baf462e3fcaa3218
ripemd-160
22d8d18ca0329bddc9c1d44db4d844166fe27f06
Diameter
40817730
Circumference
128232680.70421
Area
1.3085417345402E+15
Volume
3.5607802142795E+22
Surface area
5.2341669381607E+15
Circumference
128232680.70421
Perimeter
81635460
Area
416521770588225
Diagonal
28862493.675642
Surface area
2499130623529350
Volume
8.5007365854961E+21
Space diagonal
35349191.104814
Perimeter
61226595
Area
1.8035921727934E+14
Altitude
17674595.552407
Surface area
1.8035921727934E+14
Volume
1.0018214141141E+21
Height
9620831.2252139