20686887 is an odd 8-digits composite number following 20686886
and preceding 20686888 . In scientific notation, it is written as 2.0686887 × 10^7.
The sum of its digits is 45. It has a total of 4 prime factors and 16 positive divisors.
There are 12730176 positive integers (up to 20686887) that are relatively prime to 20686887.
20686887 has 16 divisors, whose sum is 33005280
The reverse of 20686887 is 78868602
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
twenty million six hundred eighty-six thousand eight hundred eighty-seven
Scientific notation
2.0686887 × 10^7
Engineering notation
2.0686887 × 10^6
Prime Factorization
9 × 3 × 13 × 58937
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20686887
Product of the distinct prime numbers
The prime factorization of 20686887 is 9 × 3 × 13 × 58937.
Since it has a total of 4 prime factors.
4 , 4 , 23 , 27 , 42 , 558 , 2772 , 6660 , 25708 , 24199 , 148867 , 163796 , 4883727 , 8134687 , 22860263 , 47334573 , 725852792 , 863358721 , 1232787183 , 3760973547
n×2
41373774
n×3
62060661
n×4
82747548
n×5
103434435
n÷2
10343443.5
n÷3
6895629
n÷3
5171721.75
n÷5
4137377.4
n2
427947293750769
n3
8.852897307778E+21
n4
1.8313888622861E+29
n5
3.788573444717E+36
2 √n
4548.2839621114
3 √n
274.51434724497
4 √n
67.440966497459
5 √n
29.049524529486
1 , 3 , 9 , 13 , 27 , 39 , 117 , 351 , 58937 , 176811 , 530433 , 766181 , 1591299 , 2298543 , 6895629 , 20686887
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
-20686886
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 20686887 can be divided by 16 positive divisors.
The sum of these divisors (counting 20686887) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001110111010100000100111
3
Ternary
1102221000002000
4
Quaternary
1032322200213
5
Quinary
20243440022
6
Senary
2015220343
8
Octal
116724047
10
Decimal
20686887
12
Duodecimal
6b176b3
16
Hexadecimal
13ba827
20
Vigesimal
695h47
36
Base36
cbe3r
md5
2232a32871c5c6ca250894edd39732ea
sha1
6e9be7b3bfda881961506085a05a5e241706cc1f
sha256
b2466ca6c1601ab17028cae8d856da8a66dcbd22082f3a26312462b4cb582077
sha512
f7edcbbe1c784f0f9c08bbcffb9a96c3bb9080c63ca08701e9544a0ca6606e0a150b86e57c3d380ee40fe7ad7c8c16661d1250f96d0d4e0d4c7d5df5f6231e83
ripemd-160
205457302a2bb6c4b4a90f31f572adcb3bdd53de
Diameter
41373774
Circumference
129979544.44968
Area
1.344436074171E+15
Volume
3.70829295268E+22
Surface area
5.3777442966842E+15
Circumference
129979544.44968
Perimeter
82747548
Area
427947293750769
Diagonal
29255676.15868
Surface area
2567683762504614
Volume
8.852897307778E+21
Space diagonal
35830739.334436
Perimeter
62060661
Area
1.8530661393448E+14
Altitude
17915369.667218
Surface area
1.8530661393448E+14
Volume
1.0433239532463E+21
Height
9751892.0528932