128920145 (number)

128920145 is an odd 9-digits composite number following 128920144 and preceding 128920146. In scientific notation, it is written as 1.28920145 × 10^8. The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors. There are 101445120 positive integers (up to 128920145) that are relatively prime to 128920145.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.28920145 × 10^8
Engineering notation 1.28920145 × 10^6

Prime Factorization of 128920145

Prime Factorization 5 × 61 × 422689

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128920145
Product of the distinct prime numbers

The prime factorization of 128920145 is 5 × 61 × 422689. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128920145)

Multiplication

n×y
n×2 257840290
n×3 386760435
n×4 515680580
n×5 644600725

Division

n÷y
n÷2 64460072.5
n÷3 42973381.666667
n÷3 32230036.25
n÷5 25784029

Exponentiation

ny
n2 16620403786821025
n3 2.1427048661555E+24
n4 2.7623782203697E+32
n5 3.5612620071491E+40

Nth Root

y√n
2√n 11354.300727037
3√n 505.17315240003
4√n 106.55656116372
5√n 41.88554368432

Divisors of 128920145

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 -128920144
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 128920145 can be divided by 8 positive divisors. The sum of these divisors (counting 128920145) is 1, the average is 0.125.

Base conversion 128920145

Base System Value
2 Binary 111101011110010101001010001
3 Ternary 22222120211012012
4 Quaternary 13223302221101
5 Quinary 231000421040
6 Senary 20443112305
8 Octal 753625121
10 Decimal 128920145
12 Duodecimal 37212695
16 Hexadecimal 7af2a51
20 Vigesimal 205f075
36 Base36 24r7f5

Cryptographic Hash Functions

md5 6d4ff63f6b47e9596a9f69a4cd07f11c
sha1 f5628f2ec627cf793a227748754d37bad02ed34f
sha256 32a5348909ae50837c4945aa259ae0c8014a302022ccc041389ef0f3a3d82218
sha512 9fde0fb9c6e4ef306e696e0771d1f975766b229fb441aa2cde53370fa6747302ffabb5339060c4824c86fe728bb614e0c8e22ebdafbb5d5ee08a506cb6051563
ripemd-160 ac1078913731cdf4e571f11387ca17d97928dd28

128920145 as geometric shapes

Circle

Radius = n
Diameter 257840290
Circumference 810029160.86346
Area 5.2214538436373E+16

Sphere

Radius = n
Volume 8.9753411551004E+24
Surface area 2.0885815374549E+17
Circumference 810029160.86346

Square

Length = n
Perimeter 515680580
Area 16620403786821025
Diagonal 182320617.52211

Cube

Length = n
Surface area 99722422720926150
Volume 2.1427048661555E+24
Space diagonal 223296241.25915

Equilateral Triangle

Length = n
Perimeter 386760435
Area 7.196845950271E+15
Altitude 111648120.62957

Triangular Pyramid

Length = n
Surface area 7.196845950271E+15
Volume 2.5252019015666E+23
Height 60773539.174035