20921465 is an odd 8-digits composite number following 20921464
and preceding 20921466 . In scientific notation, it is written as 2.0921465 × 10^7.
The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors.
There are 16284672 positive integers (up to 20921465) that are relatively prime to 20921465.
20921465 has 8 divisors, whose sum is 25784520
The reverse of 20921465 is 56412902
Previous prime number is 37
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty million nine hundred twenty-one thousand four hundred sixty-five
Scientific notation
2.0921465 × 10^7
Engineering notation
2.0921465 × 10^6
Prime Factorization
5 × 37 × 113089
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20921465
Product of the distinct prime numbers
The prime factorization of 20921465 is 5 × 37 × 113089.
Since it has a total of 3 prime factors.
5 , 5 , 56 , 2 , 842 , 856 , 123 , 4731 , 50058 , 16309 , 555228 , 410526 , 2755479 , 4516379 , 59519167 , 11976783 , 603410252 , 758642091 , 84443795 , 3575397190
n×2
41842930
n×3
62764395
n×4
83685860
n×5
104607325
n÷2
10460732.5
n÷3
6973821.6666667
n÷3
5230366.25
n÷5
4184293
n2
437707697746225
n3
9.1574862786282E+21
n4
1.915880286663E+29
n5
4.008302236161E+36
2 √n
4573.9987975512
3 √n
275.54806402943
4 √n
67.631344785914
5 √n
29.115108872511
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
-20921464
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 20921465 can be divided by 8 positive divisors.
The sum of these divisors (counting 20921465) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111110011110001111001
3
Ternary
1110100220212002
4
Quaternary
1033303301321
5
Quinary
20323441330
6
Senary
2024230345
8
Octal
117636171
10
Decimal
20921465
12
Duodecimal
700b3b5
16
Hexadecimal
13f3c79
20
Vigesimal
6af3d5
36
Base36
cgf3t
md5
8e180cf4163c4cf51d1f30ab36943ff6
sha1
98dcc85f1e4a7867484718078790ddc46b79aca2
sha256
198e5b7aed3a40d214316bb10cb5bf6633e8945b3a99b59316796ffa9f9348d3
sha512
f3d268fd141060c9b9c8e71768522ca0e11ae99ba3201795f9ccf47fe1e6066fac4682286bfda5d9bc352e48ef1ba9a6ef18c60d3c3a0326a7a3b05ef1377234
ripemd-160
5c7f2f56ab020d78f56cd54d962783e05fcaf6ed
Diameter
41842930
Circumference
131453441.49267
Area
1.3750992876592E+15
Volume
3.8358788824384E+22
Surface area
5.500397150637E+15
Circumference
131453441.49267
Perimeter
83685860
Area
437707697746225
Diagonal
29587419.547714
Surface area
2626246186477350
Volume
9.1574862786282E+21
Space diagonal
36237040.348774
Perimeter
62764395
Area
1.8953299284012E+14
Altitude
18118520.174387
Surface area
1.8953299284012E+14
Volume
1.0792201077068E+21
Height
9862473.1825713