2155689 is an odd 7-digits composite number following 2155688
and preceding 2155690 . In scientific notation, it is written as 2.155689 × 10^6.
The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors.
There are 1437120 positive integers (up to 2155689) that are relatively prime to 2155689.
2155689 has 4 divisors, whose sum is 2395220
The reverse of 2155689 is 9865512
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 36
Digital Root 9
Name
two million one hundred fifty-five thousand six hundred eighty-nine
Scientific notation
2.155689 × 10^6
Engineering notation
2.155689 × 10^6
Prime Factorization
9 × 239521
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
2155689
Product of the distinct prime numbers
The prime factorization of 2155689 is 9 × 239521.
Since it has a total of 2 prime factors.
10 , 10 , 6 , 33 , 143 , 281 , 2552 , 1015 , 25551 , 12361 , 104826 , 905661 , 9848799 , 9079622 , 99714574 , 27673160 , 255767528 , 393027773 , 199796334 , 3161194126
n×2
4311378
n×3
6467067
n×4
8622756
n×5
10778445
n÷2
1077844.5
n÷3
718563
n÷3
538922.25
n÷5
431137.8
n2
4646995064721
n3
1.0017476144073E+19
n4
2.1594563131541E+25
n5
4.6551162202469E+31
2 √n
1468.226481167
3 √n
129.18002627455
4 √n
38.317443562521
5 √n
18.480649106357
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
-2155688
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 2155689 can be divided by 4 positive divisors.
The sum of these divisors (counting 2155689) is 1, the average is 0.25.
Base
System
Value
2
Binary
1000001110010010101001
3
Ternary
11001112001100
4
Quaternary
20032102221
5
Quinary
1022440224
6
Senary
114112013
8
Octal
10162251
10
Decimal
2155689
12
Duodecimal
87b609
16
Hexadecimal
20e4a9
20
Vigesimal
d9949
36
Base36
1a7c9
md5
c2fe013aa48bafd524d242a8ded7990e
sha1
e89bd9cc8cb826311cdd4bb6dd8424b926f9e2c1
sha256
cd39116bf9b4470f36cb4e99b62ff86867bae293c27313f95ee38fcf3ad9c961
sha512
f7cda64a521309c449f632b26fe0e12f8d32a8d9e0e25dffd5f1ef1c88d48c69de3471dd844d2d7f2e50fbb9af46c67b9d9f7c543facffa456249fcff06bd678
ripemd-160
71f9c99fed6f0666f43c5b3a7a9df7e7d3618846
Diameter
4311378
Circumference
13544593.451649
Area
14598965556596
Volume
4.1961105948976E+19
Surface area
58395862226382
Circumference
13544593.451649
Perimeter
8622756
Area
4646995064721
Diagonal
3048604.6200585
Surface area
27881970388326
Volume
1.0017476144073E+19
Space diagonal
3733762.8733173
Perimeter
6467067
Area
2012207888654.6
Altitude
1866881.4366587
Surface area
2012207888654.6
Volume
1.1805708853081E+18
Height
1016201.5400195