18690639 is an odd 8-digits composite number following 18690638
and preceding 18690640 . In scientific notation, it is written as 1.8690639 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 11208960 positive integers (up to 18690639) that are relatively prime to 18690639.
18690639 has 8 divisors, whose sum is 19458880
The reverse of 18690639 is 93609681
Previous prime number is 97
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
eighteen million six hundred ninety thousand six hundred thirty-nine
Scientific notation
1.8690639 × 10^7
Engineering notation
1.8690639 × 10^6
Prime Factorization
33 × 97 × 5839
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
18690639
Product of the distinct prime numbers
The prime factorization of 18690639 is 33 × 97 × 5839.
Since it has a total of 3 prime factors.
7 , 6 , 61 , 96 , 768 , 848 , 731 , 6164 , 40591 , 41499 , 874385 , 991044 , 1979788 , 8215084 , 24468910 , 40854823 , 5062073 , 456513245 , 5117885052 , 6549904807
n×2
37381278
n×3
56071917
n×4
74762556
n×5
93453195
n÷2
9345319.5
n÷3
6230213
n÷3
4672659.75
n÷5
3738127.8
n2
349339986228321
n3
6.5293875708585E+21
n4
1.22038425978E+29
n5
2.2809761640831E+36
2 √n
4323.2671673169
3 √n
265.38398824275
4 √n
65.751556387031
5 √n
28.465894135207
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
-18690638
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 18690639 can be divided by 8 positive divisors.
The sum of these divisors (counting 18690639) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000111010011001001001111
3
Ternary
1022011120201220
4
Quaternary
1013103021033
5
Quinary
14241100024
6
Senary
1504334423
8
Octal
107231117
10
Decimal
18690639
12
Duodecimal
6314413
16
Hexadecimal
11d324f
20
Vigesimal
5gg6bj
36
Base36
b4lsf
md5
1574df0c5fe87bdece7cbfe979f3d756
sha1
e12423a84eca9c7a2e31158677e94ca884fdbb50
sha256
9b0341c860b8116bf43f60de851cbe723bfb77ef85927d709dc27f52035679a9
sha512
6ef02196eb00270c54bc5852b18c115831798277531fea8e525acd5430d022eac534dc3ac35909d89dbc412cc2c993ab66b796d30517499973717cd8f20c931b
ripemd-160
b229cb5ff463d6d1598e1ab417f61947ed93c7e6
Diameter
37381278
Circumference
117436748.3466
Area
1.0974839343401E+15
Volume
2.7350234700066E+22
Surface area
4.3899357373602E+15
Circumference
117436748.3466
Perimeter
74762556
Area
349339986228321
Diagonal
26432555.16322
Surface area
2096039917369926
Volume
6.5293875708585E+21
Space diagonal
32373136.373928
Perimeter
56071917
Area
1.5126865131572E+14
Altitude
16186568.186964
Surface area
1.5126865131572E+14
Volume
7.6949570472487E+20
Height
8810851.7210732