128211815 (number)

128211815 is an odd 9-digits composite number following 128211814 and preceding 128211816. In scientific notation, it is written as 1.28211815 × 10^8. The sum of its digits is 29. It has a total of 4 prime factors and 12 positive divisors. There are 99257040 positive integers (up to 128211815) that are relatively prime to 128211815.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million two hundred eleven thousand eight hundred fifteen

Notation

Scientific notation 1.28211815 × 10^8
Engineering notation 1.28211815 × 10^6

Prime Factorization of 128211815

Prime Factorization 5 × 31 × 31 × 26683

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 4135865
Product of the distinct prime numbers

The prime factorization of 128211815 is 5 × 31 × 31 × 26683. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128211815)

Multiplication

n×y
n×2 256423630
n×3 384635445
n×4 512847260
n×5 641059075

Division

n÷y
n÷2 64105907.5
n÷3 42737271.666667
n÷3 32052953.75
n÷5 25642363

Exponentiation

ny
n2 16438269505594225
n3 2.1075803687714E+24
n4 2.7021670433855E+32
n5 3.4644974106564E+40

Nth Root

y√n
2√n 11323.065618462
3√n 504.24625652707
4√n 106.40989436355
5√n 41.83941558386

Divisors of 128211815

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 -128211814
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 128211815 can be divided by 12 positive divisors. The sum of these divisors (counting 128211815) is 1, the average is 0.083333333333333.

Base conversion 128211815

Base System Value
2 Binary 111101001000101101101100111
3 Ternary 22221020211112202
4 Quaternary 13221011231213
5 Quinary 230310234230
6 Senary 20420005115
8 Octal 751055547
10 Decimal 128211815
12 Duodecimal 36b3079b
16 Hexadecimal 7a45b67
20 Vigesimal 20169af
36 Base36 24c0vb

Cryptographic Hash Functions

md5 5b9445f91528a4d39f40c7d4793bbf4d
sha1 9de03b374f2eec7fda292c02ff9537369e8b8ed5
sha256 79cfe7beeb7904b76e86beb07a0c3daa2874b497d9f0b4fe214812f275ef90d5
sha512 b2e35e258b72496d11b30d80b01a446adc2a47825a1c916af254bc6a97bc5a3cba29fedfe37583b34a0a314247ff80bbb5e9ab049942b63c95bcdac3f2d3f3cf
ripemd-160 931db0dd68a2e7cc70fd2c37f24ce9de987de4f7

128211815 as geometric shapes

Circle

Radius = n
Diameter 256423630
Circumference 805578592.21483
Area 5.1642346716504E+16

Sphere

Radius = n
Volume 8.8282120045097E+24
Surface area 2.0656938686602E+17
Circumference 805578592.21483

Square

Length = n
Perimeter 512847260
Area 16438269505594225
Diagonal 181318887.62947

Cube

Length = n
Surface area 98629617033565350
Volume 2.1075803687714E+24
Space diagonal 222069377.71062

Equilateral Triangle

Length = n
Perimeter 384635445
Area 7.1179794930498E+15
Altitude 111034688.85531

Triangular Pyramid

Length = n
Surface area 7.1179794930498E+15
Volume 2.4838072844232E+23
Height 60439629.209823