1289 is an odd 4-digits prime number following 1288
and preceding 1290 . In scientific notation, it is written as 1.289 × 10^3.
The sum of its digits is 20. It has a total of 1 prime factors and 2 positive divisors.
There are 1288 positive integers (up to 1289) that are relatively prime to 1289.
1289 has 2 divisors, whose sum is 1290
The reverse of 1289 is 9821
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 4
Sum of Digits 20
Digital Root 2
Name
one thousand two hundred eighty-nine
Scientific notation
1.289 × 10^3
Engineering notation
1.289 × 10^3
Prime Factorization
1289
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
1289
Product of the distinct prime numbers
The prime factorization of 1289 is 1289.
Since it has a total of 1 prime factors.
6 , 7 , 78 , 91 , 618 , 898 , 6920 , 8803 , 72101 , 16127 , 787730 , 389401 , 6740078 , 9411645 , 19701267 , 45781759 , 48830494 , 590259100 , 8980734677 , 2221683812
n×2
2578
n×3
3867
n×4
5156
n×5
6445
n÷2
644.5
n÷3
429.66666666667
n÷3
322.25
n÷5
257.8
n2
1661521
n3
2141700569
n4
2760652033441
n5
3558480471105449
2 √n
35.902646142032
3 √n
10.883058720464
4 √n
5.9918816862512
5 √n
4.1884234599503
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
1290
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
645
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
35.916569992136
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9984496124031
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1289 can be divided by 2 positive divisors.
The sum of these divisors (counting 1289) is 1290, the average is 645.
Base
System
Value
2
Binary
10100001001
3
Ternary
1202202
4
Quaternary
110021
5
Quinary
20124
6
Senary
5545
8
Octal
2411
10
Decimal
1289
12
Duodecimal
8b5
16
Hexadecimal
509
20
Vigesimal
349
36
Base36
zt
md5
0829424ffa0d3a2547b6c9622c77de03
sha1
e90e88c880e48e96024e634381ba1ad4888e72e0
sha256
0e0c8d9c5fa46e66bd8293289e410bbc9e35da10a211a4d5c3e0b64a373db54f
sha512
76ea2d21f71ef57a93591fbeb3d2a057641906b3f793caefbf960fc9981159f650dd7b2c4d6e18531fd22dd757ac2447935e31f4d5c75f0c2864cdfdc949da55
ripemd-160
c099ebb80074a4dbd01a389d0cfa930705898416
Diameter
2578
Circumference
8099.0258609545
Area
5219822.1673852
Volume
8971134365.0126
Surface area
20879288.669541
Circumference
8099.0258609545
Perimeter
5156
Area
1661521
Diagonal
1822.9212818989
Surface area
9969126
Volume
2141700569
Space diagonal
2232.6134909563
Perimeter
3867
Area
719459.69746066
Altitude
1116.3067454781
Surface area
719459.69746066
Volume
252401832.60183
Height
607.64042729964