20180631 is an odd 8-digits composite number following 20180630
and preceding 20180632 . In scientific notation, it is written as 2.0180631 × 10^7.
The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors.
There are 12954816 positive integers (up to 20180631) that are relatively prime to 20180631.
20180631 has 16 divisors, whose sum is 27923456
The reverse of 20180631 is 13608102
Previous prime number is 43
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty million one hundred eighty thousand six hundred thirty-one
Scientific notation
2.0180631 × 10^7
Engineering notation
2.0180631 × 10^6
Prime Factorization
3 × 73 × 43 × 2143
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20180631
Product of the distinct prime numbers
The prime factorization of 20180631 is 3 × 73 × 43 × 2143.
Since it has a total of 4 prime factors.
3 , 3 , 65 , 16 , 748 , 243 , 47 , 4676 , 15512 , 53954 , 393307 , 170426 , 2120639 , 5696736 , 91081662 , 70155851 , 988086485 , 164457849 , 8401906340 , 9159712013
n×2
40361262
n×3
60541893
n×4
80722524
n×5
100903155
n÷2
10090315.5
n÷3
6726877
n÷3
5045157.75
n÷5
4036126.2
n2
407257867558161
n3
8.2187207470381E+21
n4
1.6585897068802E+29
n5
3.3471386854948E+36
2 √n
4492.2857211001
3 √n
272.2564937431
4 √n
67.024515821452
5 √n
28.905930110293
1 , 3 , 43 , 73 , 129 , 219 , 2143 , 3139 , 6429 , 9417 , 92149 , 156439 , 276447 , 469317 , 6726877 , 20180631
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20180630
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20180631 can be divided by 16 positive divisors.
The sum of these divisors (counting 20180631) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001100111110111010010111
3
Ternary
1101222021121210
4
Quaternary
1030332322113
5
Quinary
20131240011
6
Senary
2000312503
8
Octal
114767227
10
Decimal
20180631
12
Duodecimal
6912733
16
Hexadecimal
133ee97
20
Vigesimal
662bbb
36
Base36
c0jh3
md5
5a37db8f6957664b79fad1dda46974d8
sha1
6480d8170ecf81e846a9033d4eac098c60e29581
sha256
9e00c8c0786464cf777d8a73514f461a0c6c1514710a23114f11d7b9ac110f80
sha512
f2bb44fddc179974da6e58a15ac757c15755661454648735fafa5c5420be653cfaf0a1cb24b2229400e0c162e9c3c61063d3c44094bbda3c8bf919acece29fb6
ripemd-160
87470ee1cb59d73b2d89757a9bad5db5e3945339
Diameter
40361262
Circumference
126798644.18881
Area
1.2794383248374E+15
Volume
3.4426496961068E+22
Surface area
5.1177532993495E+15
Circumference
126798644.18881
Perimeter
80722524
Area
407257867558161
Diagonal
28539722.057447
Surface area
2443547205348966
Volume
8.2187207470381E+21
Space diagonal
34953878.2208
Perimeter
60541893
Area
1.7634782959822E+14
Altitude
17476939.1104
Surface area
1.7634782959822E+14
Volume
9.685855288182E+20
Height
9513240.6858156