1221806 is an even 7-digits composite number following 1221805
and preceding 1221807 . In scientific notation, it is written as 1.221806 × 10^6.
The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors.
There are 584320 positive integers (up to 1221806) that are relatively prime to 1221806.
1221806 has 8 divisors, whose sum is 1912464
The reverse of 1221806 is 6081221
Previous prime number is 23
Is Prime? no
Number parity even
Number length 7
Sum of Digits 20
Digital Root 2
Name
one million two hundred twenty-one thousand eight hundred six
Scientific notation
1.221806 × 10^6
Engineering notation
1.221806 × 10^6
Prime Factorization
2 × 23 × 26561
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
1221806
Product of the distinct prime numbers
The prime factorization of 1221806 is 2 × 23 × 26561.
Since it has a total of 3 prime factors.
1 , 10 , 30 , 2 , 501 , 490 , 7774 , 2355 , 61333 , 26830 , 375387 , 617440 , 4324353 , 9023606 , 73411230 , 68763241 , 91959618 , 266094310 , 5110377099 , 7575639044
n×2
2443612
n×3
3665418
n×4
4887224
n×5
6109030
n÷2
610903
n÷3
407268.66666667
n÷3
305451.5
n÷5
244361.2
n2
1492809901636
n3
1823924094678274616
n4
2.2284814024225E+24
n5
2.7227719483682E+30
2 √n
1105.3533371732
3 √n
106.90567283038
4 √n
33.246854545554
5 √n
16.496828164857
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1221805
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1221806 can be divided by 8 positive divisors.
The sum of these divisors (counting 1221806) is 1, the average is 0.125.
Base
System
Value
2
Binary
100101010010010101110
3
Ternary
2022002000002
4
Quaternary
10222102232
5
Quinary
303044211
6
Senary
42104302
8
Octal
4522256
10
Decimal
1221806
12
Duodecimal
4ab092
16
Hexadecimal
12a4ae
20
Vigesimal
7cea6
36
Base36
q6r2
md5
81a546f94e5d3d9c3b55d8a6819c4598
sha1
a9eb5e6b8e1c7a974fcc3949f2c98d76de45463c
sha256
25163af70624f084f859744973672b94f39fe8ad73cb57ff52c6cf0ea91018f3
sha512
4bd009e8a6837460cb77584f7b7c95611b3e5f81a03b702afa4e8f7e2fb2649016bfa401decd852dea57b216518c9f3469ac280d4b3fbc1ff5485f8b513237ba
ripemd-160
ba04e60435339663ce7e0d54819c2093c13ab5bc
Diameter
2443612
Circumference
7676833.5074239
Area
4689800620185.8
Volume
7.6400353820622E+18
Surface area
18759202480743
Circumference
7676833.5074239
Perimeter
4887224
Area
1492809901636
Diagonal
1727894.6157888
Surface area
8956859409816
Volume
1823924094678274616
Space diagonal
2116230.0689925
Perimeter
3665418
Area
646405648918.86
Altitude
1058115.0344962
Surface area
646405648918.86
Volume
2.1495151595276E+17
Height
575964.87192961