128993908 (number)

128993908 is an even 9-digits composite number following 128993907 and preceding 128993909. In scientific notation, it is written as 1.28993908 × 10^8. The sum of its digits is 49. It has a total of 4 prime factors and 12 positive divisors. There are 64457720 positive integers (up to 128993908) that are relatively prime to 128993908.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.28993908 × 10^8
Engineering notation 1.28993908 × 10^6

Prime Factorization of 128993908

Prime Factorization 2 × 2 × 17807 × 1811

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 64496954
Product of the distinct prime numbers

The prime factorization of 128993908 is 2 × 2 × 17807 × 1811. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128993908)

Multiplication

n×y
n×2 257987816
n×3 386981724
n×4 515975632
n×5 644969540

Division

n÷y
n÷2 64496954
n÷3 42997969.333333
n÷3 32248477
n÷5 25798781.6

Exponentiation

ny
n2 16639428301112464
n3 2.1463848834463E+24
n4 2.7687057418786E+32
n5 3.5714617374696E+40

Nth Root

y√n
2√n 11357.548503088
3√n 505.26948071933
4√n 106.57179975532
5√n 41.890335637512

Divisors of 128993908

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128993907
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128993908 can be divided by 12 positive divisors. The sum of these divisors (counting 128993908) is 1, the average is 0.083333333333333.

Base conversion 128993908

Base System Value
2 Binary 111101100000100101001110100
3 Ternary 22222201120101011
4 Quaternary 13230010221310
5 Quinary 231010301113
6 Senary 20444442004
8 Octal 754045164
10 Decimal 128993908
12 Duodecimal 37249304
16 Hexadecimal 7b04a74
20 Vigesimal 20644f8
36 Base36 24ssc4

Cryptographic Hash Functions

md5 25a43fa5b4fcf734836cd99091705015
sha1 dd6cf2a3a18f578e841cfc0b249c1e19cb8e1141
sha256 bd1654c81ff745e60116ecdc54b263e2fb488781581a7d5b1d09ca43988e1a68
sha512 e00f5ab659bedcfa093bbeaa1c23378662de9915bc3ff8a620d53ea9a66975fdfb22ef49e4b9c182e787102262bf6cb67dfb7f919cc526c12f3a097730476028
ripemd-160 11ad7b382a451e29447d83fac3830974bcc0a340

128993908 as geometric shapes

Circle

Radius = n
Diameter 257987816
Circumference 810492627.46128
Area 5.2274305710709E+16

Sphere

Radius = n
Volume 8.9907559754814E+24
Surface area 2.0909722284284E+17
Circumference 810492627.46128

Square

Length = n
Perimeter 515975632
Area 16639428301112464
Diagonal 182424934.15711

Cube

Length = n
Surface area 99836569806674784
Volume 2.1463848834463E+24
Space diagonal 223424002.52287

Equilateral Triangle

Length = n
Perimeter 386981724
Area 7.2050838066066E+15
Altitude 111712001.26143

Triangular Pyramid

Length = n
Surface area 7.2050838066066E+15
Volume 2.5295388435353E+23
Height 60808311.385702