20687213 is an odd 8-digits composite number following 20687212
and preceding 20687214 . In scientific notation, it is written as 2.0687213 × 10^7.
The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors.
There are 20676828 positive integers (up to 20687213) that are relatively prime to 20687213.
20687213 has 4 divisors, whose sum is 20697600
The reverse of 20687213 is 31278602
Previous prime number is 2687
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty million six hundred eighty-seven thousand two hundred thirteen
Scientific notation
2.0687213 × 10^7
Engineering notation
2.0687213 × 10^6
Prime Factorization
2687 × 7699
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20687213
Product of the distinct prime numbers
The prime factorization of 20687213 is 2687 × 7699.
Since it has a total of 2 prime factors.
6 , 8 , 52 , 66 , 342 , 264 , 394 , 5049 , 26846 , 14188 , 661294 , 587187 , 7793116 , 8696089 , 37944470 , 90488915 , 79559313 , 351460965 , 1813646349 , 4717500019
n×2
41374426
n×3
62061639
n×4
82748852
n×5
103436065
n÷2
10343606.5
n÷3
6895737.6666667
n÷3
5171803.25
n÷5
4137442.6
n2
427960781707369
n3
8.8533158468268E+21
n4
1.8315043067958E+29
n5
3.7888719705103E+36
2 √n
4548.3197996623
3 √n
274.51578924068
4 √n
67.441232192645
5 √n
29.049616085894
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
-20687212
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 20687213 can be divided by 4 positive divisors.
The sum of these divisors (counting 20687213) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110111010100101101101
3
Ternary
1102221000112002
4
Quaternary
1032322211231
5
Quinary
20243442323
6
Senary
2015222045
8
Octal
116724555
10
Decimal
20687213
12
Duodecimal
6b17925
16
Hexadecimal
13ba96d
20
Vigesimal
695i0d
36
Base36
cbect
md5
6efad50189b28ab6f7013d47f7eb63f9
sha1
efc1582ad5212425e19094bc2e8f6653dfb42308
sha256
10d68ca2f427911775e100feaabab9def84c2fb2adae7ea96c061d13cd7547ff
sha512
0667961c3a8b900a55fab5d9d75149599401fd36d195c6be3ead50d3d24c26b5e26bf61be343071d1adf38e8c8c71e4f9a84c9799f10a8c5a7fbd5559a06707d
ripemd-160
b351037a9385ff6d493ce589254d3fed8a6e72e0
Diameter
41374426
Circumference
129981592.76809
Area
1.3444784478364E+15
Volume
3.7084682699068E+22
Surface area
5.3779137913457E+15
Circumference
129981592.76809
Perimeter
82748852
Area
427960781707369
Diagonal
29256137.192301
Surface area
2567764690244214
Volume
8.8533158468268E+21
Space diagonal
35831303.982999
Perimeter
62061639
Area
1.8531245439101E+14
Altitude
17915651.9915
Surface area
1.8531245439101E+14
Volume
1.0433732785463E+21
Height
9752045.730767