20921585 is an odd 8-digits composite number following 20921584
and preceding 20921586 . In scientific notation, it is written as 2.0921585 × 10^7.
The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors.
There are 16616304 positive integers (up to 20921585) that are relatively prime to 20921585.
20921585 has 8 divisors, whose sum is 25287360
The reverse of 20921585 is 58512902
Previous prime number is 139
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty million nine hundred twenty-one thousand five hundred eighty-five
Scientific notation
2.0921585 × 10^7
Engineering notation
2.0921585 × 10^6
Prime Factorization
5 × 139 × 30103
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20921585
Product of the distinct prime numbers
The prime factorization of 20921585 is 5 × 139 × 30103.
Since it has a total of 3 prime factors.
3 , 2 , 12 , 35 , 896 , 623 , 5186 , 2571 , 73659 , 54244 , 685095 , 70028 , 8098644 , 8870574 , 36605306 , 18853033 , 909896894 , 870254590 , 3731975609 , 4830332656
n×2
41843170
n×3
62764755
n×4
83686340
n×5
104607925
n÷2
10460792.5
n÷3
6973861.6666667
n÷3
5230396.25
n÷5
4184317
n2
437712718912225
n3
9.1576438543032E+21
n4
1.9159242429753E+29
n5
4.0084171902969E+36
2 √n
4574.0119151572
3 √n
275.54859085207
4 √n
67.631441764591
5 √n
29.11514227175
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
-20921584
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 20921585 can be divided by 8 positive divisors.
The sum of these divisors (counting 20921585) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111110011110011110001
3
Ternary
1110100221000112
4
Quaternary
1033303303301
5
Quinary
20323442320
6
Senary
2024231105
8
Octal
117636361
10
Decimal
20921585
12
Duodecimal
700b495
16
Hexadecimal
13f3cf1
20
Vigesimal
6af3j5
36
Base36
cgf75
md5
878c5349fb1957addafb163347602afe
sha1
c3eb7dd325e4fd3598e9b905907ec02ec73e3ab6
sha256
452e457da1ef65193023b59fc56a3ae1066166f6fcd424030902e9dd049764cc
sha512
1934e334412d5fed76d024ad2d93971290b1fe768a08e802433e75e2782f23bb5f682efcb376b2e023641eea3cf6bcfd049aee9a612494f9a1ef52c2e721b7ab
ripemd-160
75a29d034ecc5ee24932be3df79cf999b86d4a06
Diameter
41843170
Circumference
131454195.47491
Area
1.3751150621175E+15
Volume
3.8359448875828E+22
Surface area
5.5004602484698E+15
Circumference
131454195.47491
Perimeter
83686340
Area
437712718912225
Diagonal
29587589.253342
Surface area
2626276313473350
Volume
9.1576438543032E+21
Space diagonal
36237248.194871
Perimeter
62764755
Area
1.8953516706877E+14
Altitude
18118624.097435
Surface area
1.8953516706877E+14
Volume
1.0792386781782E+21
Height
9862529.7511138