20921646 is an even 8-digits composite number following 20921645
and preceding 20921647 . In scientific notation, it is written as 2.0921646 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 6973880 positive integers (up to 20921646) that are relatively prime to 20921646.
20921646 has 8 divisors, whose sum is 41843304
The reverse of 20921646 is 64612902
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty million nine hundred twenty-one thousand six hundred forty-six
Scientific notation
2.0921646 × 10^7
Engineering notation
2.0921646 × 10^6
Prime Factorization
2 × 3 × 3486941
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20921646
Product of the distinct prime numbers
The prime factorization of 20921646 is 2 × 3 × 3486941.
Since it has a total of 3 prime factors.
9 , 8 , 16 , 69 , 139 , 131 , 7046 , 743 , 70400 , 75093 , 773576 , 821544 , 3055050 , 5759584 , 57610419 , 2600121 , 345557508 , 143238311 , 3420788266 , 955428310
n×2
41843292
n×3
62764938
n×4
83686584
n×5
104608230
n÷2
10460823
n÷3
6973882
n÷3
5230411.5
n÷5
4184329.2
n2
437715271349316
n3
9.1577239559643E+21
n4
1.9159465877241E+29
n5
4.0084756263271E+36
2 √n
4574.0185832591
3 √n
275.54885865281
4 √n
67.631491061924
5 √n
29.115159249637
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
-20921645
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 20921646 can be divided by 8 positive divisors.
The sum of these divisors (counting 20921646) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111110011110100101110
3
Ternary
1110100221002210
4
Quaternary
1033303310232
5
Quinary
20323443041
6
Senary
2024231250
8
Octal
117636456
10
Decimal
20921646
12
Duodecimal
700b526
16
Hexadecimal
13f3d2e
20
Vigesimal
6af426
36
Base36
cgf8u
md5
7938cd1e0d0634d9152ca38928761538
sha1
1d9d2dcb3a07cb486fd6d4a72b571ba90accb509
sha256
93d1b9251311255f471f33e6face28c4d5e9d4205ea11e464526edeee1fc4953
sha512
cf5736ab325b600b14a42d4a04efd42beef3405057a86163addda2f5b927fbadf97a9bb30a10d420d6ff7b17b99a3a05b1fbff07797a3b16947e1740d54e5960
ripemd-160
8d524f5125335b5da5315f2388655efef3e69a9b
Diameter
41843292
Circumference
131454578.74921
Area
1.3751230808351E+15
Volume
3.8359784404881E+22
Surface area
5.5004923233403E+15
Circumference
131454578.74921
Perimeter
83686584
Area
437715271349316
Diagonal
29587675.520369
Surface area
2626291628095896
Volume
9.1577239559643E+21
Space diagonal
36237353.84997
Perimeter
62764938
Area
1.8953627230645E+14
Altitude
18118676.924985
Surface area
1.8953627230645E+14
Volume
1.0792481182495E+21
Height
9862558.5067896