128512945 (number)

128512945 is an odd 9-digits composite number following 128512944 and preceding 128512946. In scientific notation, it is written as 1.28512945 × 10^8. The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors. There are 87965440 positive integers (up to 128512945) that are relatively prime to 128512945.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million five hundred twelve thousand nine hundred forty-five

Notation

Scientific notation 1.28512945 × 10^8
Engineering notation 1.28512945 × 10^6

Prime Factorization of 128512945

Prime Factorization 85 × 11 × 137447

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128512945
Product of the distinct prime numbers

The prime factorization of 128512945 is 85 × 11 × 137447. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128512945)

Multiplication

n×y
n×2 257025890
n×3 385538835
n×4 514051780
n×5 642564725

Division

n÷y
n÷2 64256472.5
n÷3 42837648.333333
n÷3 32128236.25
n÷5 25702589

Exponentiation

ny
n2 16515577032573025
n3 2.1224654428303E+24
n4 2.7276428471885E+32
n5 3.5053741520038E+40

Nth Root

y√n
2√n 11336.355013848
3√n 504.64072082851
4√n 106.47232041168
5√n 41.859050721706

Divisors of 128512945

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128512944
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128512945 can be divided by 8 positive divisors. The sum of these divisors (counting 128512945) is 1, the average is 0.125.

Base conversion 128512945

Base System Value
2 Binary 111101010001111001110110001
3 Ternary 22221211010121201
4 Quaternary 13222033032301
5 Quinary 230344403240
6 Senary 20430251201
8 Octal 752171661
10 Decimal 128512945
12 Duodecimal 37056b01
16 Hexadecimal 7a8f3b1
20 Vigesimal 2034275
36 Base36 24ih81

Cryptographic Hash Functions

md5 d4c8b97316fb9dc80365b6439294c7ac
sha1 4160a1ab70052349ebd92c3b4e634c94f585bc74
sha256 1da588ef2bfbe266741b0ae8e931bb5f0c229671d807ae53b9304c4c0087a4a6
sha512 51066a13267ab49f652653cc506e4f431481e455eab30d143d2a30182092b7e2399a3cdddd3f6c91a08868e55a0754cbaca38792ec6194cdec0dac7de68c37a3
ripemd-160 f9c65223bb6430f80e42493fed2aeaa5290f91d0

128512945 as geometric shapes

Circle

Radius = n
Diameter 257025890
Circumference 807470647.80638
Area 5.1885215475328E+16

Sphere

Radius = n
Volume 8.8905624569253E+24
Surface area 2.0754086190131E+17
Circumference 807470647.80638

Square

Length = n
Perimeter 514051780
Area 16515577032573025
Diagonal 181744749.75951

Cube

Length = n
Surface area 99093462195438150
Volume 2.1224654428303E+24
Space diagonal 222590950.1703

Equilateral Triangle

Length = n
Perimeter 385538835
Area 7.1514546341835E+15
Altitude 111295475.08515

Triangular Pyramid

Length = n
Surface area 7.1514546341835E+15
Volume 2.5013495124324E+23
Height 60581583.253169