28287 (number)

28287 is an odd 5-digits composite number following 28286 and preceding 28288. In scientific notation, it is written as 2.8287 × 10^4. The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors. There are 16128 positive integers (up to 28287) that are relatively prime to 28287.

Interesting facts

Basic properties

Name

Name twenty-eight thousand two hundred eighty-seven

Notation

Scientific notation 2.8287 × 10^4
Engineering notation 2.8287 × 10^3

Prime Factorization of 28287

Prime Factorization 7 × 9 × 449

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28287
Product of the distinct prime numbers

The prime factorization of 28287 is 7 × 9 × 449. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 5, 86, 50, 256, 676, 753, 2678, 42352, 95806, 955094, 296891, 7624526, 28215, 12184889, 85559155, 415793498, 238758413, 8560081372, 3070354316

Basic calculations (n = 28287)

Multiplication

n×y
n×2 56574
n×3 84861
n×4 113148
n×5 141435

Division

n÷y
n÷2 14143.5
n÷3 9429
n÷3 7071.75
n÷5 5657.4

Exponentiation

ny
n2 800154369
n3 22633966635903
n4 640247014229788161
n5 1.8110667291518E+22

Nth Root

y√n
2√n 168.18739548492
3√n 30.469287367248
4√n 12.968708319833
5√n 7.7681459763671

Divisors of 28287

1, 7, 9, 63, 449, 3143, 4041, 28287

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 -28286
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 28287 can be divided by 8 positive divisors. The sum of these divisors (counting 28287) is 1, the average is 0.125.

Base conversion 28287

Base System Value
2 Binary 110111001111111
3 Ternary 1102210200
4 Quaternary 12321333
5 Quinary 1401122
6 Senary 334543
8 Octal 67177
10 Decimal 28287
12 Duodecimal 14453
16 Hexadecimal 6e7f
20 Vigesimal 3ae7
36 Base36 ltr

Cryptographic Hash Functions

md5 4ea4cbd8d7fb64c1c6f6922c6d4b960f
sha1 6cef4147612a322b95e7650e19f5a516cf69b7c6
sha256 bf34a2b4cd955ba77e86439d6c3966339f2c0b1fbcbfd120233a41a66860179c
sha512 2132c5df4144514a453b3f306b1b95269bc30507d9259e44843bc299d8e0a8ab4bfd578b92de81120f913b29362f40b2e6ecda732c20fb285a8f092be6fd23e2
ripemd-160 1bf3cf33ce073baf2bd54340187c2f46fa995bc9

28287 as geometric shapes

Circle

Radius = n
Diameter 56574
Circumference 177732.46278419
Area 2513759087.3882

Sphere

Radius = n
Volume 94808937739932
Surface area 10055036349.553
Circumference 177732.46278419

Square

Length = n
Perimeter 113148
Area 800154369
Diagonal 40003.859038848

Cube

Length = n
Surface area 4800926214
Volume 22633966635903
Space diagonal 48994.521193701

Equilateral Triangle

Length = n
Perimeter 84861
Area 346477005.25155
Altitude 24497.26059685

Triangular Pyramid

Length = n
Surface area 346477005.25155
Volume 2667438548899.5
Height 13334.619679616