20577981 is an odd 8-digits composite number following 20577980
and preceding 20577982 . In scientific notation, it is written as 2.0577981 × 10^7.
The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors.
There are 13718652 positive integers (up to 20577981) that are relatively prime to 20577981.
20577981 has 4 divisors, whose sum is 27437312
The reverse of 20577981 is 18977502
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty million five hundred seventy-seven thousand nine hundred eighty-one
Scientific notation
2.0577981 × 10^7
Engineering notation
2.0577981 × 10^6
Prime Factorization
3 × 6859327
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20577981
Product of the distinct prime numbers
The prime factorization of 20577981 is 3 × 6859327.
Since it has a total of 2 prime factors.
7 , 10 , 79 , 59 , 420 , 145 , 2118 , 6325 , 61925 , 48713 , 903989 , 395668 , 8633677 , 8202165 , 40591688 , 2782144 , 813855770 , 714100946 , 7712816331 , 7841563104
n×2
41155962
n×3
61733943
n×4
82311924
n×5
102889905
n÷2
10288990.5
n÷3
6859327
n÷3
5144495.25
n÷5
4115596.2
n2
423453302036361
n3
8.7138140036915E+21
n4
1.793126990055E+29
n5
3.6898933131938E+36
2 √n
4536.2959559535
3 √n
274.03177300398
4 √n
67.352030080418
5 √n
29.018873705285
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
-20577980
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 20577981 can be divided by 4 positive divisors.
The sum of these divisors (counting 20577981) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110011111111010111101
3
Ternary
1102201110200110
4
Quaternary
1032133322331
5
Quinary
20231443411
6
Senary
2013020233
8
Octal
116377275
10
Decimal
20577981
12
Duodecimal
6a84679
16
Hexadecimal
139febd
20
Vigesimal
68c4j1
36
Base36
c922l
md5
531a59c4a87f293f91890412db455614
sha1
aa9b2361fdd0013250dcfff75616145300bf39eb
sha256
81d693507d427d366691ac6746194986c0d74e9ff05cbeb3d619f09e3acfd12e
sha512
750274e1a07c3700f670217283746992afd3083c96ad33731de06b86be384a81c3795f75869b1c0a7ec1cc375431f4f6a35190909562ae5a75831e375c999d9c
ripemd-160
2a95e9f81d73ae109399f311a3f15988074366cc
Diameter
41155962
Circumference
129295267.87062
Area
1.3303177828158E+15
Volume
3.6500338744993E+22
Surface area
5.3212711312631E+15
Circumference
129295267.87062
Perimeter
82311924
Area
423453302036361
Diagonal
29101659.816456
Surface area
2540719812218166
Volume
8.7138140036915E+21
Space diagonal
35642108.609187
Perimeter
61733943
Area
1.8336065843995E+14
Altitude
17821054.304594
Surface area
1.8336065843995E+14
Volume
1.0269328286681E+21
Height
9700553.272152