20181230 is an even 8-digits composite number following 20181229
and preceding 20181231 . In scientific notation, it is written as 2.0181230 × 10^7.
The sum of its digits is 17. It has a total of 3 prime factors and 8 positive divisors.
There are 7647552 positive integers (up to 20181230) that are relatively prime to 20181230.
20181230 has 8 divisors, whose sum is 30590784
The reverse of 20181230 is 03218102
Previous prime number is 95
Is Prime? no
Number parity even
Number length 8
Sum of Digits 17
Digital Root 8
Name
twenty million one hundred eighty-one thousand two hundred thirty
Scientific notation
2.0181230 × 10^7
Engineering notation
2.0181230 × 10^6
Prime Factorization
2 × 95 × 106217
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20181230
Product of the distinct prime numbers
The prime factorization of 20181230 is 2 × 95 × 106217.
Since it has a total of 3 prime factors.
7 , 7 , 44 , 87 , 817 , 387 , 4542 , 3765 , 64697 , 78731 , 43322 , 969073 , 7489928 , 8422790 , 99144639 , 63230856 , 324525543 , 994885718 , 2972249685 , 6940333095
n×2
40362460
n×3
60543690
n×4
80724920
n×5
100906150
n÷2
10090615
n÷3
6727076.6666667
n÷3
5045307.5
n÷5
4036246
n2
407282044312900
n3
8.2194526111488E+21
n4
1.658786636197E+29
n5
3.3476354626017E+36
2 √n
4492.352390452
3 √n
272.2591874155
4 √n
67.0250131701
5 √n
28.906101704992
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
-20181229
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 20181230 can be divided by 8 positive divisors.
The sum of these divisors (counting 20181230) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001100111111000011101110
3
Ternary
1101222022102222
4
Quaternary
1030333003232
5
Quinary
20131244410
6
Senary
2000315342
8
Octal
114770356
10
Decimal
20181230
12
Duodecimal
6912b52
16
Hexadecimal
133f0ee
20
Vigesimal
662d1a
36
Base36
c0jxq
md5
871e047f2e9064f0128934d900353c25
sha1
e3e1d7e6bc933c495999225a6739c559513fb628
sha256
b79a60ba4926bc9a4c212d16120796df7811c76e48b23b97436935354e32a09e
sha512
a547627921d3a25fa4d3a1537cee22c1ce5b67fd334941a04c26775a7dea25ea8a8302f3ad15ccc7095f28dfef0dceaf9eddf701b4773e63e05015247ff9acca
ripemd-160
669678221081c7ede104e93c16be74803ac0a835
Diameter
40362460
Circumference
126802407.81681
Area
1.2795142783524E+15
Volume
3.4429562586286E+22
Surface area
5.1180571134098E+15
Circumference
126802407.81681
Perimeter
80724920
Area
407282044312900
Diagonal
28540569.171371
Surface area
2443692265877400
Volume
8.2194526111488E+21
Space diagonal
34954915.719233
Perimeter
60543690
Area
1.7635829844012E+14
Altitude
17477457.859617
Surface area
1.7635829844012E+14
Volume
9.686717798308E+20
Height
9513523.0571236