20020987 is an odd 8-digits composite number following 20020986
and preceding 20020988 . In scientific notation, it is written as 2.0020987 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 17160840 positive integers (up to 20020987) that are relatively prime to 20020987.
20020987 has 4 divisors, whose sum is 22881136
The reverse of 20020987 is 78902002
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million twenty thousand nine hundred eighty-seven
Scientific notation
2.0020987 × 10^7
Engineering notation
2.0020987 × 10^6
Prime Factorization
7 × 2860141
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20020987
Product of the distinct prime numbers
The prime factorization of 20020987 is 7 × 2860141.
Since it has a total of 2 prime factors.
10 , 6 , 72 , 16 , 535 , 583 , 5832 , 2752 , 6157 , 12437 , 640687 , 475636 , 9296579 , 3666497 , 54099955 , 4845273 , 371738252 , 479235609 , 6780801137 , 974334987
n×2
40041974
n×3
60062961
n×4
80083948
n×5
100104935
n÷2
10010493.5
n÷3
6673662.3333333
n÷3
5005246.75
n÷5
4004197.4
n2
400839920454169
n3
8.025210836494E+21
n4
1.606726418297E+29
n5
3.2168248733282E+36
2 √n
4474.4817577011
3 √n
271.53667427258
4 √n
66.891567164338
5 √n
28.860051166556
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
-20020986
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 20020987 can be divided by 4 positive divisors.
The sum of these divisors (counting 20020987) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100010111111011111011
3
Ternary
1101200011122001
4
Quaternary
1030113323323
5
Quinary
20111132422
6
Senary
1553041431
8
Octal
114277373
10
Decimal
20020987
12
Duodecimal
6856277
16
Hexadecimal
1317efb
20
Vigesimal
652c97
36
Base36
bx4aj
md5
b3ea4376ee8181f19746e1ab08e0de9e
sha1
923e80a1488691668111c036124e7bb138792256
sha256
fe9be20ccbca4d14bbdcaa1818e239d2b522d2d21eeb35ae4252cdedf3c71a22
sha512
8d6f3174e4f6c8ef8e6698e2b053ac8e758e4c872950a87f6acbe8e200f1865069b4126aadf486c7e73364ecc5314be90b988c7520d822f942fb066feb036275
ripemd-160
7faf0da6e6d1081e5cf2281980cd78923b535836
Diameter
40041974
Circumference
125795571.35363
Area
1.2592757493643E+15
Volume
3.3615924543251E+22
Surface area
5.0371029974573E+15
Circumference
125795571.35363
Perimeter
80083948
Area
400839920454169
Diagonal
28313951.347495
Surface area
2405039522725014
Volume
8.025210836494E+21
Space diagonal
34677366.701676
Perimeter
60062961
Area
1.7356877698212E+14
Altitude
17338683.350838
Surface area
1.7356877698212E+14
Volume
9.4578016715611E+20
Height
9437983.7824985