18821407 is an odd 8-digits composite number following 18821406
and preceding 18821408 . In scientific notation, it is written as 1.8821407 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 16949400 positive integers (up to 18821407) that are relatively prime to 18821407.
18821407 has 8 divisors, whose sum is 20725632
The reverse of 18821407 is 70412881
Previous prime number is 107
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
eighteen million eight hundred twenty-one thousand four hundred seven
Scientific notation
1.8821407 × 10^7
Engineering notation
1.8821407 × 10^6
Prime Factorization
11 × 107 × 15991
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
18821407
Product of the distinct prime numbers
The prime factorization of 18821407 is 11 × 107 × 15991.
Since it has a total of 3 prime factors.
8 , 5 , 79 , 57 , 680 , 981 , 9399 , 5908 , 62390 , 34415 , 110941 , 746195 , 8593525 , 5946293 , 9347118 , 81769599 , 550081196 , 227527381 , 7574658120 , 1970453001
n×2
37642814
n×3
56464221
n×4
75285628
n×5
94107035
n÷2
9410703.5
n÷3
6273802.3333333
n÷3
4705351.75
n÷5
3764281.4
n2
354245361459649
n3
6.6673961258942E+21
n4
1.2548977611568E+29
n5
2.361894150612E+36
2 √n
4338.3645536077
3 √n
266.00146512092
4 √n
65.866262635797
5 √n
28.505615132006
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
-18821406
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 18821407 can be divided by 8 positive divisors.
The sum of these divisors (counting 18821407) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000111110011000100011111
3
Ternary
1022102020010011
4
Quaternary
1013303010133
5
Quinary
14304241112
6
Senary
1511224051
8
Octal
107630437
10
Decimal
18821407
12
Duodecimal
6378027
16
Hexadecimal
11f311f
20
Vigesimal
5hcda7
36
Base36
b7eov
md5
79aae21ebbbf0e51f8f6f142a1399105
sha1
886235ff4acec69358bb42ab58029b07525e4be5
sha256
583fadf6aaf009e7fc06b3bf77af3f2ad5856242cf95cbe8d5679dc03f5aea47
sha512
1585faac1b85a1bd036bcfc19733f26e5f4d68e21a46b7c15deb48f8c3f3bdba8b09ecf7dcc388f16da2865463fb4fb5cb28dd972848cd8b4574e1b50151db25
ripemd-160
1fe06b9de5b68a6fbf15d4f12a5f026e6ed4ff6e
Diameter
37642814
Circumference
118258387.92285
Area
1.1128946251299E+15
Volume
2.7928323583576E+22
Surface area
4.4515785005196E+15
Circumference
118258387.92285
Perimeter
75285628
Area
354245361459649
Diagonal
26617489.042344
Surface area
2125472168757894
Volume
6.6673961258942E+21
Space diagonal
32599633.193933
Perimeter
56464221
Area
1.5339274109843E+14
Altitude
16299816.596966
Surface area
1.5339274109843E+14
Volume
7.8576016891278E+20
Height
8872496.347448