20087987 is an odd 8-digits composite number following 20087986
and preceding 20087988 . In scientific notation, it is written as 2.0087987 × 10^7.
The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors.
There are 19892856 positive integers (up to 20087987) that are relatively prime to 20087987.
20087987 has 4 divisors, whose sum is 20283120
The reverse of 20087987 is 78978002
Previous prime number is 103
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5
Name
twenty million eighty-seven thousand nine hundred eighty-seven
Scientific notation
2.0087987 × 10^7
Engineering notation
2.0087987 × 10^6
Prime Factorization
103 × 195029
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20087987
Product of the distinct prime numbers
The prime factorization of 20087987 is 103 × 195029.
Since it has a total of 2 prime factors.
5 , 8 , 29 , 19 , 766 , 649 , 8927 , 1286 , 33394 , 30235 , 932795 , 753651 , 4042102 , 3753318 , 81571828 , 15052129 , 332897605 , 313068520 , 5017401909 , 1206530877
n×2
40175974
n×3
60263961
n×4
80351948
n×5
100439935
n÷2
10043993.5
n÷3
6695995.6666667
n÷3
5021996.75
n÷5
4017597.4
n2
403527221712169
n3
8.1060495839002E+21
n4
1.6283421866274E+29
n5
3.2710116676523E+36
2 √n
4481.9624050186
3 √n
271.8392351245
4 √n
66.947460034109
5 √n
28.879341327164
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
-20087986
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 20087987 can be divided by 4 positive divisors.
The sum of these divisors (counting 20087987) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100101000010010110011
3
Ternary
1101210120112112
4
Quaternary
1030220102303
5
Quinary
20120303422
6
Senary
1554315535
8
Octal
114502263
10
Decimal
20087987
12
Duodecimal
6888bab
16
Hexadecimal
13284b3
20
Vigesimal
65ajj7
36
Base36
byjzn
md5
1b9bf1ce8872eec927c6b331b62d370f
sha1
fb8065641b1cfc29dec2cab02dbf24e99b62246d
sha256
371459104c03267fd26bd720ff8e16753ac23ed9855cc403a1d134ace0a72910
sha512
aeebc58928d10e10369d1840b2109d9621a79b8ca7aaea3132463f168af47f8aaaca5122b3033924056225a2370934d36715543a743baeba8688ec5803816969
ripemd-160
20c827add68db2770cfb9aec4d120d96f9eacec1
Diameter
40175974
Circumference
126216544.76921
Area
1.2677181552544E+15
Volume
3.3954541096554E+22
Surface area
5.0708726210178E+15
Circumference
126216544.76921
Perimeter
80351948
Area
403527221712169
Diagonal
28408703.656174
Surface area
2421163330273014
Volume
8.1060495839002E+21
Space diagonal
34793414.105783
Perimeter
60263961
Area
1.7473241256065E+14
Altitude
17396707.052892
Surface area
1.7473241256065E+14
Volume
9.553071049017E+20
Height
9469567.8853915