18389945 (number)

18389945 is an odd 8-digits composite number following 18389944 and preceding 18389946. In scientific notation, it is written as 1.8389945 × 10^7. The sum of its digits is 47. It has a total of 4 prime factors and 16 positive divisors. There are 12609072 positive integers (up to 18389945) that are relatively prime to 18389945.

Interesting facts

Basic properties

Name

Name eighteen million three hundred eighty-nine thousand nine hundred forty-five

Notation

Scientific notation 1.8389945 × 10^7
Engineering notation 1.8389945 × 10^6

Prime Factorization of 18389945

Prime Factorization 5 × 7 × 49 × 10723

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 18389945
Product of the distinct prime numbers

The prime factorization of 18389945 is 5 × 7 × 49 × 10723. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 7, 92, 33, 921, 167, 2273, 1327, 87926, 65967, 947061, 322493, 3290491, 4571362, 12407689, 8798544, 117162725, 624608329, 7933295471, 4852403739

Basic calculations (n = 18389945)

Multiplication

n×y
n×2 36779890
n×3 55169835
n×4 73559780
n×5 91949725

Division

n÷y
n÷2 9194972.5
n÷3 6129981.6666667
n÷3 4597486.25
n÷5 3677989

Exponentiation

ny
n2 338190077103025
n3 6.2192969174704E+21
n4 1.1437252825095E+29
n5 2.1033045040459E+36

Nth Root

y√n
2√n 4288.3499157601
3√n 263.95312624331
4√n 65.485493933849
5√n 28.373707416602

Divisors of 18389945

1, 5, 7, 35, 49, 245, 343, 1715, 10723, 53615, 75061, 375305, 525427, 2627135, 3677989, 18389945

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 -18389944
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 18389945 can be divided by 16 positive divisors. The sum of these divisors (counting 18389945) is 1, the average is 0.0625.

Base conversion 18389945

Base System Value
2 Binary 1000110001001101110111001
3 Ternary 1021121022021002
4 Quaternary 1012021232321
5 Quinary 14201434240
6 Senary 1454054345
8 Octal 106115671
10 Decimal 18389945
12 Duodecimal 61aa3b5
16 Hexadecimal 1189bb9
20 Vigesimal 5eieh5
36 Base36 ay5rt

Cryptographic Hash Functions

md5 029ac1596de437c77742387be2329df6
sha1 75c2ad7f8fca98ba31512b1952cb0b807403a4a3
sha256 4ba40fef995092579d1dbb702dc4dc7513a05f867f831c961641c8fd21591e1d
sha512 0b2f560e23f19f829a37378248ad9081bd843cf07ea14eda7bacdac54d9ac4a24c162d9ca25722da6e7f11fe6e1df3aff2c51794b5946fdb77eb51b851bd41f0
ripemd-160 15cffe7ec953be73d0ef08202bc9821a69c32205

18389945 as geometric shapes

Circle

Radius = n
Diameter 36779890
Circumference 115547432.22384
Area 1.0624554617438E+15

Sphere

Radius = n
Volume 2.6051330008558E+22
Surface area 4.2498218469753E+15
Circumference 115547432.22384

Square

Length = n
Perimeter 73559780
Area 338190077103025
Diagonal 26007309.630295

Cube

Length = n
Surface area 2029140462618150
Volume 6.2192969174704E+21
Space diagonal 31852319.088397

Equilateral Triangle

Length = n
Perimeter 55169835
Area 1.4644059903952E+14
Altitude 15926159.544199

Triangular Pyramid

Length = n
Surface area 1.4644059903952E+14
Volume 7.3295117075932E+20
Height 8669103.2100984