20100987 is an odd 8-digits composite number following 20100986
and preceding 20100988 . In scientific notation, it is written as 2.0100987 × 10^7.
The sum of its digits is 27. It has a total of 5 prime factors and 16 positive divisors.
There are 12612096 positive integers (up to 20100987) that are relatively prime to 20100987.
20100987 has 16 divisors, whose sum is 31531680
The reverse of 20100987 is 78900102
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty million one hundred thousand nine hundred eighty-seven
Scientific notation
2.0100987 × 10^7
Engineering notation
2.0100987 × 10^6
Prime Factorization
3 × 3 × 3 × 17 × 43793
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
2233443
Product of the distinct prime numbers
The prime factorization of 20100987 is 3 × 3 × 3 × 17 × 43793.
Since it has a total of 5 prime factors.
1 , 8 , 30 , 83 , 107 , 939 , 764 , 4341 , 27466 , 70179 , 757242 , 68738 , 9751106 , 7072153 , 96568786 , 75241302 , 126771968 , 468821241 , 7955060431 , 5512706109
n×2
40201974
n×3
60302961
n×4
80403948
n×5
100504935
n÷2
10050493.5
n÷3
6700329
n÷3
5025246.75
n÷5
4020197.4
n2
404049678374169
n3
8.1217973323534E+21
n4
1.6325614259427E+29
n5
3.2816095999576E+36
2 √n
4483.4124280508
3 √n
271.89786300002
4 √n
66.958288718058
5 √n
28.883078230123
1 , 3 , 9 , 17 , 27 , 51 , 153 , 459 , 43793 , 131379 , 394137 , 744481 , 1182411 , 2233443 , 6700329 , 20100987
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20100986
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20100987 can be divided by 16 positive divisors.
The sum of these divisors (counting 20100987) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001100101011011101111011
3
Ternary
1101211020101000
4
Quaternary
1030223131323
5
Quinary
20121212422
6
Senary
1554500043
8
Octal
114533573
10
Decimal
20100987
12
Duodecimal
6894623
16
Hexadecimal
132b77b
20
Vigesimal
65cc97
36
Base36
byu0r
md5
7a6f7139ca44a26ee42626bcbd1670d2
sha1
a20a4a76896a0a6cf37062691ecd891daaccda19
sha256
3201346c52e98db974e0ac1add02aa94f87d497aa7647de666f787b46ab693c7
sha512
f98e68b44ea5fe4b632675fb4a6cd36630149510877109d6be7324210e37ee2776615ddef7eafa207a526ba189a22b6aa3d2eed6b96bb5f5fc10f471bc92c8dd
ripemd-160
1021062ca7d1260dcccb4a5d8ccaaee9ae113c03
Diameter
40201974
Circumference
126298226.17821
Area
1.2693595012656E+15
Volume
3.4020505111022E+22
Surface area
5.0774380050624E+15
Circumference
126298226.17821
Perimeter
80403948
Area
404049678374169
Diagonal
28427088.432485
Surface area
2424298070245014
Volume
8.1217973323534E+21
Space diagonal
34815930.766282
Perimeter
60302961
Area
1.7495864293148E+14
Altitude
17407965.383141
Surface area
1.7495864293148E+14
Volume
9.5716299485498E+20
Height
9475696.1441618