18291220 is an even 8-digits composite number following 18291219
and preceding 18291221 . In scientific notation, it is written as 1.8291220 × 10^7.
The sum of its digits is 25. It has a total of 4 prime factors and 12 positive divisors.
There are 7316480 positive integers (up to 18291220) that are relatively prime to 18291220.
18291220 has 12 divisors, whose sum is 38411604
The reverse of 18291220 is 02219281
Previous prime number is 5
Is Prime? no
Number parity even
Number length 8
Sum of Digits 25
Digital Root 7
Name
eighteen million two hundred ninety-one thousand two hundred twenty
Scientific notation
1.8291220 × 10^7
Engineering notation
1.8291220 × 10^6
Prime Factorization
2 × 2 × 5 × 914561
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
9145610
Product of the distinct prime numbers
The prime factorization of 18291220 is 2 × 2 × 5 × 914561.
Since it has a total of 4 prime factors.
8 , 8 , 48 , 88 , 334 , 536 , 4371 , 7788 , 76676 , 19089 , 318251 , 24331 , 2312722 , 5541215 , 85270004 , 57062116 , 977605485 , 619013742 , 4357181524 , 5619465887
n×2
36582440
n×3
54873660
n×4
73164880
n×5
91456100
n÷2
9145610
n÷3
6097073.3333333
n÷3
4572805
n÷5
3658244
n2
334568729088400
n3
6.1196702288763E+21
n4
1.1193623448383E+29
n5
2.0474502909153E+36
2 √n
4276.8235876641
3 √n
263.479941151
4 √n
65.39742798967
5 √n
28.3431773752
1 , 2 , 4 , 5 , 10 , 20 , 914561 , 1829122 , 3658244 , 4572805 , 9145610 , 18291220
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-18291219
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 18291220 can be divided by 12 positive divisors.
The sum of these divisors (counting 18291220) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1000101110001101000010100
3
Ternary
1021102021211121
4
Quaternary
1011301220110
5
Quinary
14140304340
6
Senary
1452013324
8
Octal
105615024
10
Decimal
18291220
12
Duodecimal
6161244
16
Hexadecimal
1171a14
20
Vigesimal
5e6810
36
Base36
aw1lg
md5
1494c97f3f5b0c75054391d6832c32b4
sha1
b26c761684583823c51c3cca745d100646cf6c97
sha256
a059d915867d84005e8782d829beaf91446967e2efd6d317283598f8dc143c22
sha512
391c7d8a9f8acb6a38f90fd88a0140d6047c29c853708625bafc55b30c34dff0868054c5056ef7e310a7635543e196d92db883c4ec5af6e431bd4e53babc12b8
ripemd-160
ea4762847927a06512ff093bba73cc6017b8c11b
Diameter
36582440
Circumference
114927124.75439
Area
1.051078661425E+15
Volume
2.563401471124E+22
Surface area
4.2043146457E+15
Circumference
114927124.75439
Perimeter
73164880
Area
334568729088400
Diagonal
25867691.39635
Surface area
2007412374530400
Volume
6.1196702288763E+21
Space diagonal
31681322.37242
Perimeter
54873660
Area
1.4487250935121E+14
Altitude
15840661.18621
Surface area
1.4487250935121E+14
Volume
7.2121005291065E+20
Height
8622563.7987833