28138889 (number)

28138889 is an odd 8-digits composite number following 28138888 and preceding 28138890. In scientific notation, it is written as 2.8138889 × 10^7. The sum of its digits is 47. It has a total of 2 prime factors and 4 positive divisors. There are 27995856 positive integers (up to 28138889) that are relatively prime to 28138889.

Interesting facts

Basic properties

Name

Name twenty-eight million one hundred thirty-eight thousand eight hundred eighty-nine

Notation

Scientific notation 2.8138889 × 10^7
Engineering notation 2.8138889 × 10^6

Prime Factorization of 28138889

Prime Factorization 197 × 142837

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 28138889
Product of the distinct prime numbers

The prime factorization of 28138889 is 197 × 142837. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 9, 7, 36, 494, 886, 8487, 5864, 64497, 4254, 526443, 717360, 5631365, 4318663, 15494581, 55345516, 63434709, 246749159, 6488305463, 4303744626

Basic calculations (n = 28138889)

Multiplication

n×y
n×2 56277778
n×3 84416667
n×4 112555556
n×5 140694445

Division

n÷y
n÷2 14069444.5
n÷3 9379629.6666667
n÷3 7034722.25
n÷5 5627777.8

Exponentiation

ny
n2 791797074154321
n3 2.2280289980153E+22
n4 6.2694260663934E+29
n5 1.7641468417595E+37

Nth Root

y√n
2√n 5304.6101647529
3√n 304.16015121675
4√n 72.832754751917
5√n 30.893092818704

Divisors of 28138889

1, 197, 142837, 28138889

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 -28138888
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 28138889 can be divided by 4 positive divisors. The sum of these divisors (counting 28138889) is 1, the average is 0.25.

Base conversion 28138889

Base System Value
2 Binary 1101011010101110110001001
3 Ternary 1221221121022002
4 Quaternary 1223111312021
5 Quinary 24200421024
6 Senary 2443040345
8 Octal 153256611
10 Decimal 28138889
12 Duodecimal 95100b5
16 Hexadecimal 1ad5d89
20 Vigesimal 8fh749
36 Base36 gr43t

Cryptographic Hash Functions

md5 6d23e0b4f3791b84200858fb8750bd24
sha1 8bba59abf041cfd2a09705d5d3407679a79056d9
sha256 2fec0ffb7e329ee790de96fe8ae83eda4b2c20640f130dfa2a4c4dfa9f3231ed
sha512 69e7740b3b157f78902575db76aa8001018768a9a641c04a6c73c9dea2ac6f515c55dd9183a79d005a4d6036f15c329745765c58d89c04255705679eb45a8126
ripemd-160 9ee4a792f66decf388a99df9a7bb92a9d8fac954

28138889 as geometric shapes

Circle

Radius = n
Diameter 56277778
Circumference 176801853.92516
Area 2.4875038712971E+15

Sphere

Radius = n
Volume 9.3327460428666E+22
Surface area 9.9500154851884E+15
Circumference 176801853.92516

Square

Length = n
Perimeter 112555556
Area 791797074154321
Diagonal 39794398.453911

Cube

Length = n
Surface area 4750782444925926
Volume 2.2280289980153E+22
Space diagonal 48737985.416541

Equilateral Triangle

Length = n
Perimeter 84416667
Area 3.4285819042992E+14
Altitude 24368992.70827

Triangular Pyramid

Length = n
Surface area 3.4285819042992E+14
Volume 2.6257573552948E+21
Height 13264799.484637