20707921 is an odd 8-digits composite number following 20707920
and preceding 20707922 . In scientific notation, it is written as 2.0707921 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 17990400 positive integers (up to 20707921) that are relatively prime to 20707921.
20707921 has 8 divisors, whose sum is 23612904
The reverse of 20707921 is 12970702
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million seven hundred seven thousand nine hundred twenty-one
Scientific notation
2.0707921 × 10^7
Engineering notation
2.0707921 × 10^6
Prime Factorization
17 × 13 × 93701
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20707921
Product of the distinct prime numbers
The prime factorization of 20707921 is 17 × 13 × 93701.
Since it has a total of 3 prime factors.
4 , 1 , 91 , 20 , 209 , 503 , 1804 , 1457 , 36537 , 56334 , 446735 , 286771 , 255103 , 6335643 , 64835383 , 87806214 , 323314542 , 905996803 , 5363173210 , 141627575
n×2
41415842
n×3
62123763
n×4
82831684
n×5
103539605
n÷2
10353960.5
n÷3
6902640.3333333
n÷3
5176980.25
n÷5
4141584.2
n2
428817992142241
n3
8.8799291046601E+21
n4
1.838848703849E+29
n5
3.8078733690258E+36
2 √n
4550.5956752935
3 √n
274.60735590431
4 √n
67.458103110698
5 √n
29.055429519815
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
-20707920
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 20707921 can be divided by 8 positive divisors.
The sum of these divisors (counting 20707921) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001110111111101001010001
3
Ternary
1102222001221001
4
Quaternary
1032333221101
5
Quinary
20300123141
6
Senary
2015502001
8
Octal
116775121
10
Decimal
20707921
12
Duodecimal
6b27901
16
Hexadecimal
13bfa51
20
Vigesimal
6989g1
36
Base36
cbuc1
md5
96b428f397d4ad330a43a800151b51f4
sha1
29f35beccae345dba9bb80fd8722b64a205cfa56
sha256
24e3071869524d98c6cce314075d7ca469c6d53b11844c745dd4c0064072a7a8
sha512
87fc18feea193f448bafc4ecb1bfb7b0162ca26afbb86f47220224f8a1bbdb77b978d3ad8a8e2c80d1d8d251ba4be480f9e83b371191c6a4b13589dd33238384
ripemd-160
6fd74d398715839375edbe8f615ef1551bffad31
Diameter
41415842
Circumference
130111704.96944
Area
1.3471714538412E+15
Volume
3.7196160052798E+22
Surface area
5.3886858153648E+15
Circumference
130111704.96944
Perimeter
82831684
Area
428817992142241
Diagonal
29285422.726751
Surface area
2572907952853446
Volume
8.8799291046601E+21
Space diagonal
35867171.291123
Perimeter
62123763
Area
1.8568363739751E+14
Altitude
17933585.645561
Surface area
1.8568363739751E+14
Volume
1.0465096810602E+21
Height
9761807.5755835