20387687 is an odd 8-digits composite number following 20387686
and preceding 20387688 . In scientific notation, it is written as 2.0387687 × 10^7.
The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors.
There are 20200536 positive integers (up to 20387687) that are relatively prime to 20387687.
20387687 has 4 divisors, whose sum is 20574840
The reverse of 20387687 is 78678302
Previous prime number is 109
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5
Name
twenty million three hundred eighty-seven thousand six hundred eighty-seven
Scientific notation
2.0387687 × 10^7
Engineering notation
2.0387687 × 10^6
Prime Factorization
109 × 187043
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20387687
Product of the distinct prime numbers
The prime factorization of 20387687 is 109 × 187043.
Since it has a total of 2 prime factors.
2 , 8 , 87 , 55 , 829 , 646 , 8532 , 2760 , 34960 , 92722 , 114565 , 611410 , 370475 , 9433863 , 11930692 , 28745269 , 711820454 , 568075122 , 3994944013 , 8570154791
n×2
40775374
n×3
61163061
n×4
81550748
n×5
101938435
n÷2
10193843.5
n÷3
6795895.6666667
n÷3
5096921.75
n÷5
4077537.4
n2
415657781209969
n3
8.4743007424233E+21
n4
1.7277139108039E+29
n5
3.5224090439017E+36
2 √n
4515.2726385015
3 √n
273.18445673422
4 √n
67.195778427677
5 √n
28.96500391267
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
-20387686
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 20387687 can be divided by 4 positive divisors.
The sum of these divisors (counting 20387687) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001101110001011101100111
3
Ternary
1102100210122112
4
Quaternary
1031301131213
5
Quinary
20204401222
6
Senary
2004551235
8
Octal
115613547
10
Decimal
20387687
12
Duodecimal
69b251b
16
Hexadecimal
1371767
20
Vigesimal
678947
36
Base36
c4z8n
md5
85325e298e6e28a2129b2c8bde0cfb19
sha1
7543f67945bc44609921f4374f4f3251f1d2eaac
sha256
e46cbc56a945d26b2b515e768f11e1e159f1fa9ed5894dac3a2a4aa26e08d599
sha512
2aae0dd479d07228bbc2e251621eecda452c0527320046cb62cffe2045364b4a1b3533d06deecbc6b9275b7082b085a41be4ec3685acd16618659985eaadfd34
ripemd-160
542d2a7766160e4a6302c3429632b2f4f65ec59a
Diameter
40775374
Circumference
128099615.40578
Area
1.3058274318567E+15
Volume
3.5497067942277E+22
Surface area
5.2233097274267E+15
Circumference
128099615.40578
Perimeter
81550748
Area
415657781209969
Diagonal
28832543.460818
Surface area
2493946687259814
Volume
8.4743007424233E+21
Space diagonal
35312509.732811
Perimeter
61163061
Area
1.7998509890425E+14
Altitude
17656254.866406
Surface area
1.7998509890425E+14
Volume
9.9870592013029E+20
Height
9610847.8202725