2218981 is an odd 7-digits composite number following 2218980
and preceding 2218982 . In scientific notation, it is written as 2.218981 × 10^6.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 2161152 positive integers (up to 2218981) that are relatively prime to 2218981.
2218981 has 8 divisors, whose sum is 2277720
The reverse of 2218981 is 1898122
Previous prime number is 73
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 31
Digital Root 4
Name
two million two hundred eighteen thousand nine hundred eighty-one
Scientific notation
2.218981 × 10^6
Engineering notation
2.218981 × 10^6
Prime Factorization
113 × 73 × 269
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
2218981
Product of the distinct prime numbers
The prime factorization of 2218981 is 113 × 73 × 269.
Since it has a total of 3 prime factors.
4 , 5 , 21 , 87 , 179 , 55 , 7944 , 8964 , 42368 , 24775 , 431191 , 901618 , 1167509 , 7561701 , 7837548 , 65797949 , 813124573 , 532600352 , 5168569734 , 404528180
n×2
4437962
n×3
6656943
n×4
8875924
n×5
11094905
n÷2
1109490.5
n÷3
739660.33333333
n÷3
554745.25
n÷5
443796.2
n2
4923876678361
n3
1.0925988795626E+19
n4
2.4244561543707E+25
n5
5.3798221418817E+31
2 √n
1489.624449316
3 √n
130.43211238817
4 √n
38.595653243805
5 √n
18.587916664045
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
-2218980
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 2218981 can be divided by 8 positive divisors.
The sum of these divisors (counting 2218981) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000011101101111100101
3
Ternary
11011201212111
4
Quaternary
20131233211
5
Quinary
1032001411
6
Senary
115321021
8
Octal
10355745
10
Decimal
2218981
12
Duodecimal
8b0171
16
Hexadecimal
21dbe5
20
Vigesimal
dh791
36
Base36
1bk6d
md5
1a593e8a3b85a5d4908db049216dffef
sha1
e0c55c619bb12da9f0491c980130395ac1981734
sha256
53f5e7f3cfe39ad8f9389e235caf0670832088f445297f7f7eeeae7f123a39dc
sha512
56b20f71a55c49dfa39eb9854658bcd94fab565a7d27922264062bce7ce92448e093ed107051e45e967e51b5663be45e02a4bba0ad847e36f73f1b55fa4e2391
ripemd-160
09c4d49d9cda7d8a8d3fe4026aadc2d0d9b79235
Diameter
4437962
Circumference
13942268.816111
Area
15468814799921
Volume
4.5766674844725E+19
Surface area
61875259199684
Circumference
13942268.816111
Perimeter
8875924
Area
4923876678361
Diagonal
3138113.0248482
Surface area
29543260070166
Volume
1.0925988795626E+19
Space diagonal
3843387.83303
Perimeter
6656943
Area
2132101144281.2
Altitude
1921693.916515
Surface area
2132101144281.2
Volume
1.2876401280926E+18
Height
1046037.6749494