18388640 (number)

18388640 is an even 8-digits composite number following 18388639 and preceding 18388641. In scientific notation, it is written as 1.8388640 × 10^7. The sum of its digits is 38. It has a total of 8 prime factors and 48 positive divisors. There are 7311360 positive integers (up to 18388640) that are relatively prime to 18388640.

Interesting facts

Basic properties

Name

Name eighteen million three hundred eighty-eight thousand six hundred forty

Notation

Scientific notation 1.8388640 × 10^7
Engineering notation 1.8388640 × 10^6

Prime Factorization of 18388640

Prime Factorization 2 × 2 × 2 × 2 × 2 × 5 × 409 × 281

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 1149290
Product of the distinct prime numbers

The prime factorization of 18388640 is 2 × 2 × 2 × 2 × 2 × 5 × 409 × 281. Since it has a total of 8 prime factors.

Most popular turbo-numbers

Basic calculations (n = 18388640)

Multiplication

n×y
n×2 36777280
n×3 55165920
n×4 73554560
n×5 91943200

Division

n÷y
n÷2 9194320
n÷3 6129546.6666667
n÷3 4597160
n÷5 3677728

Exponentiation

ny
n2 338142081049600
n3 6.2179729972719E+21
n4 1.1434006697655E+29
n5 2.1025583292077E+36

Nth Root

y√n
2√n 4288.1977566339
3√n 263.9468824875
4√n 65.4843321462
5√n 28.37330471024

Divisors of 18388640

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -18388639
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18388640 can be divided by 48 positive divisors. The sum of these divisors (counting 18388640) is 1, the average is 0.020833333333333.

Base conversion 18388640

Base System Value
2 Binary 1000110001001011010100000
3 Ternary 1021121020110202
4 Quaternary 1012021122200
5 Quinary 14201414030
6 Senary 1454044332
8 Octal 106113240
10 Decimal 18388640
12 Duodecimal 61a96a8
16 Hexadecimal 11896a0
20 Vigesimal 5eibc0
36 Base36 ay4rk

Cryptographic Hash Functions

md5 9a446c7945c0133baf6074959674edb2
sha1 25e26949d7fa43f5aa010ebefe4aec66fe8a9e90
sha256 4350b53ab9148eabcf4a3955832bbb2e5891eb73735868ce57c0270ad5ebd9a6
sha512 120174f9229d7fbf2ed2d0be7be3669e745312be79c585fdfcc4cc331adc722065dd91da3d64c758b56d4721c18e0e5d92368dfb73269f510d163aea51bf647e
ripemd-160 75fa1a16dca177c17e8c4253ad3e13ae1359e820

18388640 as geometric shapes

Circle

Radius = n
Diameter 36777280
Circumference 115539232.66701
Area 1.062304677695E+15

Sphere

Radius = n
Volume 2.6045784384599E+22
Surface area 4.24921871078E+15
Circumference 115539232.66701

Square

Length = n
Perimeter 73554560
Area 338142081049600
Diagonal 26005464.081596

Cube

Length = n
Surface area 2028852486297600
Volume 6.2179729972719E+21
Space diagonal 31850058.762093

Equilateral Triangle

Length = n
Perimeter 55165920
Area 1.4641981613875E+14
Altitude 15925029.381047

Triangular Pyramid

Length = n
Surface area 1.4641981613875E+14
Volume 7.3279514526764E+20
Height 8668488.0271988