1243640 is an even 7-digits composite number following 1243639
and preceding 1243641 . In scientific notation, it is written as 1.243640 × 10^6.
The sum of its digits is 20. It has a total of 5 prime factors and 16 positive divisors.
There are 497440 positive integers (up to 1243640) that are relatively prime to 1243640.
1243640 has 16 divisors, whose sum is 2798280
The reverse of 1243640 is 0463421
Previous prime number is 5
Is Prime? no
Number parity even
Number length 7
Sum of Digits 20
Digital Root 2
Name
one million two hundred forty-three thousand six hundred forty
Scientific notation
1.243640 × 10^6
Engineering notation
1.243640 × 10^6
Prime Factorization
2 × 2 × 2 × 5 × 31091
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
310910
Product of the distinct prime numbers
The prime factorization of 1243640 is 2 × 2 × 2 × 5 × 31091.
Since it has a total of 5 prime factors.
3 , 10 , 15 , 81 , 394 , 730 , 3851 , 3809 , 86809 , 1192 , 114241 , 343715 , 4996661 , 6692481 , 34808831 , 53410200 , 201578065 , 400843820 , 2281008089 , 8396503944
n×2
2487280
n×3
3730920
n×4
4974560
n×5
6218200
n÷2
621820
n÷3
414546.66666667
n÷3
310910
n÷5
248728
n2
1546640449600
n3
1923463928740544000
n4
2.3920966803389E+24
n5
2.9749071155367E+30
2 √n
1115.1860831269
3 √n
107.53872770853
4 √n
33.39440197289
5 √n
16.555371718014
1 , 2 , 4 , 5 , 8 , 10 , 20 , 40 , 31091 , 62182 , 124364 , 155455 , 248728 , 310910 , 621820 , 1243640
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1243639
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1243640 can be divided by 16 positive divisors.
The sum of these divisors (counting 1243640) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100101111100111111000
3
Ternary
2100011221202
4
Quaternary
10233213320
5
Quinary
304244030
6
Senary
42353332
8
Octal
4574770
10
Decimal
1243640
12
Duodecimal
4bb848
16
Hexadecimal
12f9f8
20
Vigesimal
7f920
36
Base36
qnlk
md5
5fa78468e7d42f8a3dbe47634f257e44
sha1
6bca8b7154523e45a16699de736d02f6d39dff95
sha256
98e113356b5552c6c34978a9037b738ef03616059ca515d981447f6ef1d67510
sha512
28e170324076eab2b4b54161a1181ffa9e074da6b54a31ecd4ebb6e5c6c8bffde1f49ca61ad617b2ba373f335cbe93670a972201e9d6e8400262313d8d6b8361
ripemd-160
2de2c5c53d4e8b7eabce95bea4df9ed0875793b2
Diameter
2487280
Circumference
7814020.5754208
Area
4858914274208.2
Volume
8.0569868639683E+18
Surface area
19435657096833
Circumference
7814020.5754208
Perimeter
4974560
Area
1546640449600
Diagonal
1758772.5547097
Surface area
9279842697600
Volume
1923463928740544000
Space diagonal
2154047.666325
Perimeter
3730920
Area
669714959937.09
Altitude
1077023.8331625
Surface area
669714959937.09
Volume
2.2668239789669E+17
Height
586257.51823656