128665621 (number)

128665621 is an odd 9-digits composite number following 128665620 and preceding 128665622. In scientific notation, it is written as 1.28665621 × 10^8. The sum of its digits is 37. It has a total of 3 prime factors and 6 positive divisors. There are 110284776 positive integers (up to 128665621) that are relatively prime to 128665621.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million six hundred sixty-five thousand six hundred twenty-one

Notation

Scientific notation 1.28665621 × 10^8
Engineering notation 1.28665621 × 10^6

Prime Factorization of 128665621

Prime Factorization 7 × 7 × 2625829

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 18380803
Product of the distinct prime numbers

The prime factorization of 128665621 is 7 × 7 × 2625829. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128665621)

Multiplication

n×y
n×2 257331242
n×3 385996863
n×4 514662484
n×5 643328105

Division

n÷y
n÷2 64332810.5
n÷3 42888540.333333
n÷3 32166405.25
n÷5 25733124.2

Exponentiation

ny
n2 16554842027315641
n3 2.1300390300015E+24
n4 2.7406279454938E+32
n5 3.5262459653691E+40

Nth Root

y√n
2√n 11343.086925524
3√n 504.84048289882
4√n 106.50392915533
5√n 41.868991879924

Divisors of 128665621

6 divisors

τ Total Divisors 6
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128665620
Sum of the proper positive divisors of n
A Arithmetic Mean 0.16666666666667
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 6
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128665621 can be divided by 6 positive divisors. The sum of these divisors (counting 128665621) is 1, the average is 0.16666666666667.

Base conversion 128665621

Base System Value
2 Binary 111101010110100100000010101
3 Ternary 22222002220001101
4 Quaternary 13222310200111
5 Quinary 230414244441
6 Senary 20433430101
8 Octal 752644025
10 Decimal 128665621
12 Duodecimal 3710b331
16 Hexadecimal 7ab4815
20 Vigesimal 2043411
36 Base36 24lr11

Cryptographic Hash Functions

md5 e8436746a464c4bf359b5f1b5f5f89c7
sha1 9ccc32dd01efe11bbf2dbf9b28d20344cfb297ed
sha256 bd71294f2e3214ab27b88ab666b694d48eaec0329b61f3c915172ab70135c8e0
sha512 60722e4f5dd17b68285e8083e6eb94e738db772c49511a993d7d26a1a6e4594c30da468fe8e344cd854e88ae4d3e2d8ed3a02ce5f35b9728c28cae52514c0469
ripemd-160 ad2d2c6fb2154239711a40806cb05e4cbaf3ccb1

128665621 as geometric shapes

Circle

Radius = n
Diameter 257331242
Circumference 808429939.40634
Area 5.2008570094354E+16

Sphere

Radius = n
Volume 8.9222866246828E+24
Surface area 2.0803428037742E+17
Circumference 808429939.40634

Square

Length = n
Perimeter 514662484
Area 16554842027315641
Diagonal 181960666.22936

Cube

Length = n
Surface area 99329052163893846
Volume 2.1300390300015E+24
Space diagonal 222855392.7594

Equilateral Triangle

Length = n
Perimeter 385996863
Area 7.1684568756468E+15
Altitude 111427696.3797

Triangular Pyramid

Length = n
Surface area 7.1684568756468E+15
Volume 2.5102750705101E+23
Height 60653555.409786