128220391 (number)

128220391 is an odd 9-digits composite number following 128220390 and preceding 128220392. In scientific notation, it is written as 1.28220391 × 10^8. The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors. There are 116689440 positive integers (up to 128220391) that are relatively prime to 128220391.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million two hundred twenty thousand three hundred ninety-one

Notation

Scientific notation 1.28220391 × 10^8
Engineering notation 1.28220391 × 10^6

Prime Factorization of 128220391

Prime Factorization 13 × 71 × 138917

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128220391
Product of the distinct prime numbers

The prime factorization of 128220391 is 13 × 71 × 138917. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128220391)

Multiplication

n×y
n×2 256440782
n×3 384661173
n×4 512881564
n×5 641101955

Division

n÷y
n÷2 64110195.5
n÷3 42740130.333333
n÷3 32055097.75
n÷5 25644078.2

Exponentiation

ny
n2 16440468668192881
n3 2.1080033208589E+24
n4 2.7028901002983E+32
n5 3.4656562549028E+40

Nth Root

y√n
2√n 11323.44430816
3√n 504.25749917134
4√n 106.41167374006
5√n 41.839975290823

Divisors of 128220391

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 -128220390
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 128220391 can be divided by 8 positive divisors. The sum of these divisors (counting 128220391) is 1, the average is 0.125.

Base conversion 128220391

Base System Value
2 Binary 111101001000111110011100111
3 Ternary 22221021021022101
4 Quaternary 13221013303213
5 Quinary 230311023031
6 Senary 20420112531
8 Octal 751076347
10 Decimal 128220391
12 Duodecimal 36b35747
16 Hexadecimal 7a47ce7
20 Vigesimal 2017ajb
36 Base36 24c7hj

Cryptographic Hash Functions

md5 63ce094afff485dbabba032dc1f7dbf2
sha1 57a864d2dd10fee8c95fe0dcc3f549c628e06db6
sha256 79a13fcd4f9eadb0fa23e5e1f9bd15339550ba303508e8d0e668f9f2d676ac31
sha512 5088e870ed053cbbc3e43ab8dc6af46aee2ef1ede2d2e900b9b855e7ec05ac9402ec78148d0a420b5d00d331f12d0210ce765aba613bb07cc324ec07040624fa
ripemd-160 e8e9efaf39cb3093c6a3ea5c86556e169e4234eb

128220391 as geometric shapes

Circle

Radius = n
Diameter 256440782
Circumference 805632476.81202
Area 5.1649255589568E+16

Sphere

Radius = n
Volume 8.8299836620711E+24
Surface area 2.0659702235827E+17
Circumference 805632476.81202

Square

Length = n
Perimeter 512881564
Area 16440468668192881
Diagonal 181331015.92498

Cube

Length = n
Surface area 98642812009157286
Volume 2.1080033208589E+24
Space diagonal 222084231.77835

Equilateral Triangle

Length = n
Perimeter 384661173
Area 7.1189317583886E+15
Altitude 111042115.88917

Triangular Pyramid

Length = n
Surface area 7.1189317583886E+15
Volume 2.4843057382385E+23
Height 60443671.974994