1286 is an even 4-digits composite number following 1285
and preceding 1287 . In scientific notation, it is written as 1.286 × 10^3.
The sum of its digits is 17. It has a total of 2 prime factors and 4 positive divisors.
There are 642 positive integers (up to 1286) that are relatively prime to 1286.
1286 has 4 divisors, whose sum is 1932
The reverse of 1286 is 6821
Previous prime number is 2
Is Prime? no
Number parity even
Number length 4
Sum of Digits 17
Digital Root 8
Name
one thousand two hundred eighty-six
Scientific notation
1.286 × 10^3
Engineering notation
1.286 × 10^3
Prime Factorization
2 × 643
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
1286
Product of the distinct prime numbers
The prime factorization of 1286 is 2 × 643.
Since it has a total of 2 prime factors.
9 , 7 , 59 , 18 , 433 , 537 , 7745 , 5348 , 25395 , 95983 , 97544 , 72201 , 1991645 , 8279866 , 51529622 , 8339361 , 772442384 , 341275469 , 6130092699 , 75220600
n×2
2572
n×3
3858
n×4
5144
n×5
6430
n÷2
643
n÷3
428.66666666667
n÷3
321.5
n÷5
257.2
n2
1653796
n3
2126781656
n4
2735041209616
n5
3517262995566176
2 √n
35.860842154082
3 √n
10.874609137315
4 √n
5.9883922845854
5 √n
4.1864720271445
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
-1285
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 1286 can be divided by 4 positive divisors.
The sum of these divisors (counting 1286) is 1, the average is 0.25.
Base
System
Value
2
Binary
10100000110
3
Ternary
1202122
4
Quaternary
110012
5
Quinary
20121
6
Senary
5542
8
Octal
2406
10
Decimal
1286
12
Duodecimal
8b2
16
Hexadecimal
506
20
Vigesimal
346
36
Base36
zq
md5
c0a271bc0ecb776a094786474322cb82
sha1
91b92669ecf0fa9c6e550fd5fd76c31b5c969f57
sha256
2adf89afa76f370d54092cb53f74d1558f116bbbffe20007a67ba31746fdb7e3
sha512
0af3e15edc5e7825aa71796bb5b757425f1b0d02828e366fce89190bda14fa0db8fac09a6bd031a7e7e5bdf2e380ad33f1af87b1b1cd29cb472416756ca77984
ripemd-160
cd42f9d826a29af42d2cd7c265d98246be801f21
Diameter
2572
Circumference
8080.1763050329
Area
5195553.3641362
Volume
8908642168.3722
Surface area
20782213.456545
Circumference
8080.1763050329
Perimeter
5144
Area
1653796
Diagonal
1818.6786412118
Surface area
9922776
Volume
2126781656
Space diagonal
2227.4173385336
Perimeter
3858
Area
716114.67433854
Altitude
1113.7086692668
Surface area
716114.67433854
Volume
250643621.84346
Height
606.22621373727