20687021 is an odd 8-digits composite number following 20687020
and preceding 20687022 . In scientific notation, it is written as 2.0687021 × 10^7.
The sum of its digits is 26. It has a total of 2 prime factors and 4 positive divisors.
There are 20652000 positive integers (up to 20687021) that are relatively prime to 20687021.
20687021 has 4 divisors, whose sum is 20722044
The reverse of 20687021 is 12078602
Previous prime number is 601
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8
Name
twenty million six hundred eighty-seven thousand twenty-one
Scientific notation
2.0687021 × 10^7
Engineering notation
2.0687021 × 10^6
Prime Factorization
601 × 34421
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20687021
Product of the distinct prime numbers
The prime factorization of 20687021 is 601 × 34421.
Since it has a total of 2 prime factors.
3 , 6 , 9 , 57 , 765 , 86 , 995 , 1953 , 72837 , 13719 , 80591 , 329084 , 7093958 , 9158933 , 67462516 , 48231665 , 68750791 , 19771358 , 8333354669 , 1895434629
n×2
41374042
n×3
62061063
n×4
82748084
n×5
103435105
n÷2
10343510.5
n÷3
6895673.6666667
n÷3
5171755.25
n÷5
4137404.2
n2
427952837854441
n3
8.8530693437044E+21
n4
1.8314363142767E+29
n5
3.7886961493605E+36
2 √n
4548.298692918
3 √n
274.51493996896
4 √n
67.441075709971
5 √n
29.049562163241
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
-20687020
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 20687021 can be divided by 4 positive divisors.
The sum of these divisors (counting 20687021) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110111010100010101101
3
Ternary
1102221000020222
4
Quaternary
1032322202231
5
Quinary
20243441041
6
Senary
2015221125
8
Octal
116724255
10
Decimal
20687021
12
Duodecimal
6b177a5
16
Hexadecimal
13ba8ad
20
Vigesimal
695hb1
36
Base36
cbe7h
md5
898cbceb898121a04a381b7a50c8caca
sha1
4dbfb16340fc667af8f1e64e90852261bdc6e26b
sha256
c3cbc1820a0994a55f0b8e62506dba1b6891a953c359a5e4938bf1e7aa391d46
sha512
bfbf96e013c4c680fe7e5b2ebec44d23b747755da606fa26433848cf9040a84d58eeb03ef47fe7e9d506914db7db3073b20c1a9a144370ae3a72474e1d9e1d6a
ripemd-160
8d1ae14bb77aede3fe0e5a55a798ead9658f55ec
Diameter
41374042
Circumference
129980386.39652
Area
1.3444534914864E+15
Volume
3.7083650149204E+22
Surface area
5.3778139659457E+15
Circumference
129980386.39652
Perimeter
82748084
Area
427952837854441
Diagonal
29255865.663297
Surface area
2567717027126646
Volume
8.8530693437044E+21
Space diagonal
35830971.429244
Perimeter
62061063
Area
1.8530901460179E+14
Altitude
17915485.714622
Surface area
1.8530901460179E+14
Volume
1.0433442278747E+21
Height
9751955.221099