128186721 (number)

128186721 is an odd 9-digits composite number following 128186720 and preceding 128186722. In scientific notation, it is written as 1.28186721 × 10^8. The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors. There are 78884064 positive integers (up to 128186721) that are relatively prime to 128186721.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million one hundred eighty-six thousand seven hundred twenty-one

Notation

Scientific notation 1.28186721 × 10^8
Engineering notation 1.28186721 × 10^6

Prime Factorization of 128186721

Prime Factorization 117 × 1095613

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 128186721
Product of the distinct prime numbers

The prime factorization of 128186721 is 117 × 1095613. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128186721)

Multiplication

n×y
n×2 256373442
n×3 384560163
n×4 512746884
n×5 640933605

Division

n÷y
n÷2 64093360.5
n÷3 42728907
n÷3 32046680.25
n÷5 25637344.2

Exponentiation

ny
n2 16431835440731841
n3 2.106343105159E+24
n4 2.7000521595129E+32
n5 3.4611083285693E+40

Nth Root

y√n
2√n 11321.957472098
3√n 504.21335685195
4√n 106.40468726564
5√n 41.837777668507

Divisors of 128186721

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128186720
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128186721 can be divided by 4 positive divisors. The sum of these divisors (counting 128186721) is 1, the average is 0.25.

Base conversion 128186721

Base System Value
2 Binary 111101000111111100101100001
3 Ternary 22221012120010100
4 Quaternary 13220333211201
5 Quinary 230303433341
6 Senary 20415253013
8 Octal 750774541
10 Decimal 128186721
12 Duodecimal 36b1a169
16 Hexadecimal 7a3f961
20 Vigesimal 20136g1
36 Base36 24bhi9

Cryptographic Hash Functions

md5 ebdb94a63cf63408bce9c2aad8e9f743
sha1 c76a01166a687cc1cc1816491dc0556f60b30840
sha256 281271dffdc386e2db4b2ae060c249a5afeafc40c2f023d8ac8a6901e4a773db
sha512 852716f6110155bd2a547424d39a114b0c79b82e4b7d05d0295dc86060f1d6ce701f4f7d45d6298607fe1834e6f16174763cb75362e148c24920562cf63f3c10
ripemd-160 80ab82f8022ab9c819f387cdecdf52b519e9bf56

128186721 as geometric shapes

Circle

Radius = n
Diameter 256373442
Circumference 805420921.96273
Area 5.16221335056E+16

Sphere

Radius = n
Volume 8.8230293668094E+24
Surface area 2.064885340224E+17
Circumference 805420921.96273

Square

Length = n
Perimeter 512746884
Area 16431835440731841
Diagonal 181283399.35434

Cube

Length = n
Surface area 98591012644391046
Volume 2.106343105159E+24
Space diagonal 222025913.62766

Equilateral Triangle

Length = n
Perimeter 384560163
Area 7.1151934612396E+15
Altitude 111012956.81383

Triangular Pyramid

Length = n
Surface area 7.1151934612396E+15
Volume 2.4823491552724E+23
Height 60427799.784779