28745 (number)

28745 is an odd 5-digits composite number following 28744 and preceding 28746. In scientific notation, it is written as 2.8745 × 10^4. The sum of its digits is 26. It has a total of 2 prime factors and 4 positive divisors. There are 22992 positive integers (up to 28745) that are relatively prime to 28745.

Interesting facts

Basic properties

Name

Name twenty-eight thousand seven hundred forty-five

Notation

Scientific notation 2.8745 × 10^4
Engineering notation 2.8745 × 10^3

Prime Factorization of 28745

Prime Factorization 5 × 5749

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 28745
Product of the distinct prime numbers

The prime factorization of 28745 is 5 × 5749. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 4, 59, 64, 71, 342, 1606, 5808, 9486, 46740, 124262, 653045, 4903587, 7244533, 46317219, 89720639, 786127561, 753072622, 5454698783, 4450034085

Basic calculations (n = 28745)

Multiplication

n×y
n×2 57490
n×3 86235
n×4 114980
n×5 143725

Division

n÷y
n÷2 14372.5
n÷3 9581.6666666667
n÷3 7186.25
n÷5 5749

Exponentiation

ny
n2 826275025
n3 23751275593625
n4 682730416938750625
n5 1.9625085834904E+22

Nth Root

y√n
2√n 169.54350474141
3√n 30.632852352695
4√n 13.020887248625
5√n 7.7931397200017

Divisors of 28745

1, 5, 5749, 28745

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 -28744
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 28745 can be divided by 4 positive divisors. The sum of these divisors (counting 28745) is 1, the average is 0.25.

Base conversion 28745

Base System Value
2 Binary 111000001001001
3 Ternary 1110102122
4 Quaternary 13001021
5 Quinary 1404440
6 Senary 341025
8 Octal 70111
10 Decimal 28745
12 Duodecimal 14775
16 Hexadecimal 7049
20 Vigesimal 3bh5
36 Base36 m6h

Cryptographic Hash Functions

md5 b41ceb1791257df1e55b59ec7ad75533
sha1 43310fc8729bc9ed6d17695f2dc4a223e07749dc
sha256 80117cdd3d8650db08ea07a9769d36f40637fa25c97d661de93a4bcd24fb0574
sha512 b0ea732874ad146d1463b52ab77f9930344a65720bee8480ef8377d73d79450f326345fb6f00cff3c905ae74bfd8d011e35af48d2b4ab6d989dbafbafd2c33f0
ripemd-160 630f285a7f6480cd4627e858d675b3872b992f22

28745 as geometric shapes

Circle

Radius = n
Diameter 57490
Circumference 180610.16165488
Area 2595819548.3847

Sphere

Radius = n
Volume 99489110557758
Surface area 10383278193.539
Circumference 180610.16165488

Square

Length = n
Perimeter 114980
Area 826275025
Diagonal 40651.568850415

Cube

Length = n
Surface area 4957650150
Volume 23751275593625
Space diagonal 49787.800463567

Equilateral Triangle

Length = n
Perimeter 86235
Area 357787581.08131
Altitude 24893.900231784

Triangular Pyramid

Length = n
Surface area 357787581.08131
Volume 2799114672347.1
Height 13550.522950138