18378639 is an odd 8-digits composite number following 18378638
and preceding 18378640 . In scientific notation, it is written as 1.8378639 × 10^7.
The sum of its digits is 45. It has a total of 4 prime factors and 12 positive divisors.
There are 12096864 positive integers (up to 18378639) that are relatively prime to 18378639.
18378639 has 12 divisors, whose sum is 26884000
The reverse of 18378639 is 93687381
Previous prime number is 79
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
eighteen million three hundred seventy-eight thousand six hundred thirty-nine
Scientific notation
1.8378639 × 10^7
Engineering notation
1.8378639 × 10^6
Prime Factorization
3 × 3 × 79 × 25849
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
6126213
Product of the distinct prime numbers
The prime factorization of 18378639 is 3 × 3 × 79 × 25849.
Since it has a total of 4 prime factors.
10 , 3 , 96 , 95 , 16 , 706 , 9002 , 1538 , 10127 , 58871 , 561851 , 367487 , 1896505 , 9058544 , 61294639 , 11567808 , 425435143 , 86241407 , 4712890679 , 5132092223
n×2
36757278
n×3
55135917
n×4
73514556
n×5
91893195
n÷2
9189319.5
n÷3
6126213
n÷3
4594659.75
n÷5
3675727.8
n2
337774371492321
n3
6.2078332371093E+21
n4
1.1409152603703E+29
n5
2.0968469699937E+36
2 √n
4287.0314904372
3 √n
263.8990230215
4 √n
65.47542661516
5 √n
28.37021776991
1 , 3 , 9 , 79 , 237 , 711 , 25849 , 77547 , 232641 , 2042071 , 6126213 , 18378639
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
-18378638
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 18378639 can be divided by 12 positive divisors.
The sum of these divisors (counting 18378639) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1000110000110111110001111
3
Ternary
1021120201202100
4
Quaternary
1012012332033
5
Quinary
14201104024
6
Senary
1453530143
8
Octal
106067617
10
Decimal
18378639
12
Duodecimal
61a3953
16
Hexadecimal
1186f8f
20
Vigesimal
5eh6bj
36
Base36
axx1r
md5
6222e5afc65095d6567f6f6fdf466eb8
sha1
02e270cc63b74ab91aca8b66eb3f3a6e5c128484
sha256
0106624524772f17e941b3edd1a2f8db4b99c00da63d78c786099f4219914838
sha512
247b42ef9baf4215bedda6a0f2bec3ec073533aece43c4ed4634afede80c01ded7abea0e0e97813d93b078ece5eb6981a52aaa76fa570dc8a23c78dbf396ce84
ripemd-160
1da9a5fd6a02f2b6c0d25ae12ff76c6e7081d46a
Diameter
36757278
Circumference
115476394.53076
Area
1.0611494840512E+15
Volume
2.6003311056551E+22
Surface area
4.2445979362047E+15
Circumference
115476394.53076
Perimeter
73514556
Area
337774371492321
Diagonal
25991320.531759
Surface area
2026646228953926
Volume
6.2078332371093E+21
Space diagonal
31832736.521967
Perimeter
55135917
Area
1.4626059322984E+14
Altitude
15916368.260983
Surface area
1.4626059322984E+14
Volume
7.3160016307253E+20
Height
8663773.5105864