20181217 is an odd 8-digits composite number following 20181216
and preceding 20181218 . In scientific notation, it is written as 2.0181217 × 10^7.
The sum of its digits is 22. It has a total of 2 prime factors and 4 positive divisors.
There are 16740000 positive integers (up to 20181217) that are relatively prime to 20181217.
20181217 has 4 divisors, whose sum is 20274436
The reverse of 20181217 is 71218102
Previous prime number is 217
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty million one hundred eighty-one thousand two hundred seventeen
Scientific notation
2.0181217 × 10^7
Engineering notation
2.0181217 × 10^6
Prime Factorization
217 × 93001
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20181217
Product of the distinct prime numbers
The prime factorization of 20181217 is 217 × 93001.
Since it has a total of 2 prime factors.
7 , 7 , 19 , 52 , 854 , 320 , 6909 , 151 , 74247 , 84359 , 35020 , 352135 , 3583819 , 1169051 , 81408112 , 66358216 , 598891848 , 381892933 , 9594837984 , 9254374575
n×2
40362434
n×3
60543651
n×4
80724868
n×5
100906085
n÷2
10090608.5
n÷3
6727072.3333333
n÷3
5045304.25
n÷5
4036243.4
n2
407281519601089
n3
8.2194367271593E+21
n4
1.6587823620857E+29
n5
3.3476246805025E+36
2 √n
4492.3509435484
3 √n
272.25912895573
4 √n
67.02500237634
5 √n
28.906097980944
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
-20181216
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 20181217 can be divided by 4 positive divisors.
The sum of these divisors (counting 20181217) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100111111000011100001
3
Ternary
1101222022102111
4
Quaternary
1030333003201
5
Quinary
20131244332
6
Senary
2000315321
8
Octal
114770341
10
Decimal
20181217
12
Duodecimal
6912b41
16
Hexadecimal
133f0e1
20
Vigesimal
662d0h
36
Base36
c0jxd
md5
afc3cd2c6e361d0451f6ab0a85b3e800
sha1
0dacf29ea2abf9565f5c0b93c0321da230b5eba5
sha256
8bdea9e2a4682a55d4efe01b159b775f916bc6e244f334159b294a7f8886a966
sha512
6e977ecd1220aaeb109c06695961db8a2d8187752b5a7ffc2ecae578c0284dbaaa82b20aebc869393e99c554312e2eef18fefc507b0e0a7b619adaaaab1626a1
ripemd-160
a6aa0d8b98c4c39632ada9a9accfdebd547eade8
Diameter
40362434
Circumference
126802326.1354
Area
1.2795126299217E+15
Volume
3.4429496051587E+22
Surface area
5.1180505196867E+15
Circumference
126802326.1354
Perimeter
80724868
Area
407281519601089
Diagonal
28540550.786594
Surface area
2443689117606534
Volume
8.2194367271593E+21
Space diagonal
34954893.202573
Perimeter
60543651
Area
1.7635807123324E+14
Altitude
17477446.601286
Surface area
1.7635807123324E+14
Volume
9.6866990788469E+20
Height
9513516.9288648