18307921 is an odd 8-digits composite number following 18307920
and preceding 18307922 . In scientific notation, it is written as 1.8307921 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 18145792 positive integers (up to 18307921) that are relatively prime to 18307921.
18307921 has 4 divisors, whose sum is 18470052
The reverse of 18307921 is 12970381
Previous prime number is 113
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
eighteen million three hundred seven thousand nine hundred twenty-one
Scientific notation
1.8307921 × 10^7
Engineering notation
1.8307921 × 10^6
Prime Factorization
113 × 162017
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
18307921
Product of the distinct prime numbers
The prime factorization of 18307921 is 113 × 162017.
Since it has a total of 2 prime factors.
6 , 3 , 8 , 73 , 573 , 724 , 9811 , 806 , 97822 , 64642 , 204684 , 337927 , 9297686 , 8990 , 31827403 , 30825082 , 542316976 , 161930984 , 8102070999 , 9802902946
n×2
36615842
n×3
54923763
n×4
73231684
n×5
91539605
n÷2
9153960.5
n÷3
6102640.3333333
n÷3
4576980.25
n÷5
3661584.2
n2
335179971342241
n3
6.136448436116E+21
n4
1.1234561318899E+29
n5
2.0568146109605E+36
2 √n
4278.7756426342
3 √n
263.56010784491
4 √n
65.412350841674
5 √n
28.348351295995
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
-18307920
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 18307921 can be divided by 4 positive divisors.
The sum of these divisors (counting 18307921) is 1, the average is 0.25.
Base
System
Value
2
Binary
1000101110101101101010001
3
Ternary
1021110010202011
4
Quaternary
1011311231101
5
Quinary
14141323141
6
Senary
1452222521
8
Octal
105655521
10
Decimal
18307921
12
Duodecimal
616aa41
16
Hexadecimal
1175b51
20
Vigesimal
5e89g1
36
Base36
awehd
md5
eb76d7a9ca4dce9f5ef782b8146b3729
sha1
a812b81c3f1e8ec1c57b307075831df798d7df85
sha256
25dc72ba0afa773e88bbf10145ab86157e328219c343dae82ef8977867c6b794
sha512
8ee1d8322e9e9c787d6bbecb273d50dc529275022c4573966d3d89fd829e8aaa2669e526ce18de24dfbc2820ea585496441f2a2cac755b1d20e7588fbd3ec0e2
ripemd-160
6e8cb9668e425bd4ee89a28d6fb9bf9c6187f4a8
Diameter
36615842
Circumference
115032060.2322
Area
1.0529989355992E+15
Volume
2.570429510138E+22
Surface area
4.2119957423969E+15
Circumference
115032060.2322
Perimeter
73231684
Area
335179971342241
Diagonal
25891310.177055
Surface area
2011079828053446
Volume
6.136448436116E+21
Space diagonal
31710249.352957
Perimeter
54923763
Area
1.4513718501106E+14
Altitude
15855124.676479
Surface area
1.4513718501106E+14
Volume
7.2318738359654E+20
Height
8630436.7256851