18391389 (number)

18391389 is an odd 8-digits composite number following 18391388 and preceding 18391390. In scientific notation, it is written as 1.8391389 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors. There are 12023168 positive integers (up to 18391389) that are relatively prime to 18391389.

Interesting facts

Basic properties

Name

Name eighteen million three hundred ninety-one thousand three hundred eighty-nine

Notation

Scientific notation 1.8391389 × 10^7
Engineering notation 1.8391389 × 10^6

Prime Factorization of 18391389

Prime Factorization 3 × 83 × 233 × 317

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 18391389
Product of the distinct prime numbers

The prime factorization of 18391389 is 3 × 83 × 233 × 317. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 2, 95, 15, 72, 811, 870, 6751, 89604, 86644, 536266, 401996, 2227988, 2058075, 42797044, 15456515, 818854957, 382001035, 4039615027, 7638120120

Basic calculations (n = 18391389)

Multiplication

n×y
n×2 36782778
n×3 55174167
n×4 73565556
n×5 91956945

Division

n÷y
n÷2 9195694.5
n÷3 6130463
n÷3 4597847.25
n÷5 3678277.8

Exponentiation

ny
n2 338243189349321
n3 6.220762071924E+21
n4 1.144084551412E+29
n5 2.1041304033909E+36

Nth Root

y√n
2√n 4288.5182755819
3√n 263.9600346986
4√n 65.486779395401
5√n 28.374152989949

Divisors of 18391389

1, 3, 83, 233, 249, 317, 699, 951, 19339, 26311, 58017, 73861, 78933, 221583, 6130463, 18391389

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 -18391388
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 18391389 can be divided by 16 positive divisors. The sum of these divisors (counting 18391389) is 1, the average is 0.0625.

Base conversion 18391389

Base System Value
2 Binary 1000110001010000101011101
3 Ternary 1021121101020120
4 Quaternary 1012022011131
5 Quinary 14202011024
6 Senary 1454105153
8 Octal 106120535
10 Decimal 18391389
12 Duodecimal 61ab1b9
16 Hexadecimal 118a15d
20 Vigesimal 5eii99
36 Base36 ay6vx

Cryptographic Hash Functions

md5 c91e09cc3fccfe1ebafde7fd876ef75f
sha1 e1e983906ceccc933ee93cdbadf2f0a6092dd161
sha256 7cfc460767e7f4aaf39ddb1c9550f03f8ea871ae0aad84f03bb71424431af2de
sha512 c2f5cfdefb042efc855ec5947b3014b30e88fac15d184dd9f77893b3e5bdc130a2b0d0dbfe7c783178ea2bd3e2af061a2444f63d08bfe7d3638061928f3029a6
ripemd-160 5a6f77c71dc190a43ca041a6af17e484e3641583

18391389 as geometric shapes

Circle

Radius = n
Diameter 36782778
Circumference 115556505.14342
Area 1.0626223187866E+15

Sphere

Radius = n
Volume 2.6057467233182E+22
Surface area 4.2504892751464E+15
Circumference 115556505.14342

Square

Length = n
Perimeter 73565556
Area 338243189349321
Diagonal 26009351.754679

Cube

Length = n
Surface area 2029459136095926
Volume 6.220762071924E+21
Space diagonal 31854820.169763

Equilateral Triangle

Length = n
Perimeter 55174167
Area 1.4646359731679E+14
Altitude 15927410.084882

Triangular Pyramid

Length = n
Surface area 1.4646359731679E+14
Volume 7.3312384086759E+20
Height 8669783.9182265