2155188 is an even 7-digits composite number following 2155187
and preceding 2155189 . In scientific notation, it is written as 2.155188 × 10^6.
The sum of its digits is 30. It has a total of 4 prime factors and 12 positive divisors.
There are 615744 positive integers (up to 2155188) that are relatively prime to 2155188.
2155188 has 12 divisors, whose sum is 3951332
The reverse of 2155188 is 8815512
Previous prime number is 21
Is Prime? no
Number parity even
Number length 7
Sum of Digits 30
Digital Root 3
Name
two million one hundred fifty-five thousand one hundred eighty-eight
Scientific notation
2.155188 × 10^6
Engineering notation
2.155188 × 10^6
Prime Factorization
2 × 2 × 21 × 25657
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1077594
Product of the distinct prime numbers
The prime factorization of 2155188 is 2 × 2 × 21 × 25657.
Since it has a total of 4 prime factors.
1 , 3 , 40 , 90 , 781 , 970 , 4258 , 8130 , 80264 , 27161 , 89823 , 99471 , 1235082 , 4085754 , 25283728 , 5099698 , 259333221 , 821906004 , 4433046991 , 2662250395
n×2
4310376
n×3
6465564
n×4
8620752
n×5
10775940
n÷2
1077594
n÷3
718396
n÷3
538797
n÷5
431037.6
n2
4644835315344
n3
1.0010493333606E+19
n4
2.1574495106667E+25
n5
4.6497092959947E+31
2 √n
1468.0558572479
3 √n
129.17001799606
4 √n
38.315217045554
5 √n
18.479790015268
1 , 2 , 4 , 21 , 42 , 84 , 25657 , 51314 , 102628 , 538797 , 1077594 , 2155188
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-2155187
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 2155188 can be divided by 12 positive divisors.
The sum of these divisors (counting 2155188) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1000001110001010110100
3
Ternary
11001111100210
4
Quaternary
20032022310
5
Quinary
1022431223
6
Senary
114105420
8
Octal
10161264
10
Decimal
2155188
12
Duodecimal
87b270
16
Hexadecimal
20e2b4
20
Vigesimal
d97j8
36
Base36
1a6yc
md5
66381addc8c5ce97428841d57da33747
sha1
fba274af0441648b85d1c2f9028d958fdfba5823
sha256
ede7e52a310e5bd6939fe8aa91b2e5486b6af40a649332373c70f3e2dce54c8d
sha512
3c68fc460af736a0c7b270165c2de1d205126d7a648fc55be00885f95c2f19238823b0b093c012f80f793968ce84814a1b38ff7901e5cc2cb1f230dd896d5c96
ripemd-160
d692f7427f172e7c756e7b59582fcde2c7143471
Diameter
4310376
Circumference
13541445.57581
Area
14592180503819
Volume
4.1931856420887E+19
Surface area
58368722015277
Circumference
13541445.57581
Perimeter
8620752
Area
4644835315344
Diagonal
3047896.0990637
Surface area
27869011892064
Volume
1.0010493333606E+19
Space diagonal
3732895.1158628
Perimeter
6465564
Area
2011272689741.5
Altitude
1866447.5579314
Surface area
2011272689741.5
Volume
1.1797479532025E+18
Height
1015965.3663546