128221685 (number)

128221685 is an odd 9-digits composite number following 128221684 and preceding 128221686. In scientific notation, it is written as 1.28221685 × 10^8. The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors. There are 102577344 positive integers (up to 128221685) that are relatively prime to 128221685.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million two hundred twenty-one thousand six hundred eighty-five

Notation

Scientific notation 1.28221685 × 10^8
Engineering notation 1.28221685 × 10^6

Prime Factorization of 128221685

Prime Factorization 5 × 25644337

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 128221685
Product of the distinct prime numbers

The prime factorization of 128221685 is 5 × 25644337. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128221685)

Multiplication

n×y
n×2 256443370
n×3 384665055
n×4 512886740
n×5 641108425

Division

n÷y
n÷2 64110842.5
n÷3 42740561.666667
n÷3 32055421.25
n÷5 25644337

Exponentiation

ny
n2 16440800504239225
n3 2.1080671434024E+24
n4 2.7029992122019E+32
n5 3.465831135422E+40

Nth Root

y√n
2√n 11323.501446108
3√n 504.25919548762
4√n 106.41194221565
5√n 41.840059740277

Divisors of 128221685

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 -128221684
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 128221685 can be divided by 4 positive divisors. The sum of these divisors (counting 128221685) is 1, the average is 0.25.

Base conversion 128221685

Base System Value
2 Binary 111101001001000000111110101
3 Ternary 22221021100002022
4 Quaternary 13221020013311
5 Quinary 230311043220
6 Senary 20420122525
8 Octal 751100765
10 Decimal 128221685
12 Duodecimal 36b36445
16 Hexadecimal 7a481f5
20 Vigesimal 2017e45
36 Base36 24c8hh

Cryptographic Hash Functions

md5 45a426d16e3861d7239ce7ca805c0d4e
sha1 29463ed7d052a9fce2a7c18e306b30f917fe2bd3
sha256 264eb11401d31abc9bb3ef2e4b0e953f00049ae27b6d444b761c8297998fcd35
sha512 0f7c0fcd358c14a9d80ce6b1b1c715eb6d939c675a3ebbf0c763e8f2361f6fbc9abb4e31d1b8039ba4208092bf4a501cc3ba879af10ae4cc1f1de33430552224
ripemd-160 57831df88f6364160b83e501352903dd2fbf3613

128221685 as geometric shapes

Circle

Radius = n
Diameter 256443370
Circumference 805640607.25381
Area 5.1650298083253E+16

Sphere

Radius = n
Volume 8.830251001316E+24
Surface area 2.0660119233301E+17
Circumference 805640607.25381

Square

Length = n
Perimeter 512886740
Area 16440800504239225
Diagonal 181332845.91733

Cube

Length = n
Surface area 98644803025435350
Volume 2.1080671434024E+24
Space diagonal 222086473.05209

Equilateral Triangle

Length = n
Perimeter 384665055
Area 7.1190754476116E+15
Altitude 111043236.52605

Triangular Pyramid

Length = n
Surface area 7.1190754476116E+15
Volume 2.4843809538273E+23
Height 60444281.972444