28181 (number)

28181 is an odd 5-digits prime number following 28180 and preceding 28182. In scientific notation, it is written as 2.8181 × 10^4. The sum of its digits is 20. It has a total of 1 prime factors and 2 positive divisors. There are 28180 positive integers (up to 28181) that are relatively prime to 28181.

Interesting facts

Basic properties

Name

Name twenty-eight thousand one hundred eighty-one

Notation

Scientific notation 2.8181 × 10^4
Engineering notation 2.8181 × 10^3

Prime Factorization of 28181

Prime Factorization 28181

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 28181
Product of the distinct prime numbers

The prime factorization of 28181 is 28181. Since it has a total of 1 prime factors.

Most popular turbo-numbers

4, 8, 66, 25, 315, 556, 4220, 9772, 75933, 63800, 74407, 851820, 4599667, 7013021, 39572579, 69898077, 839873150, 951056385, 8708981320, 2385256426

Basic calculations (n = 28181)

Multiplication

n×y
n×2 56362
n×3 84543
n×4 112724
n×5 140905

Division

n÷y
n÷2 14090.5
n÷3 9393.6666666667
n÷3 7045.25
n÷5 5636.2

Exponentiation

ny
n2 794168761
n3 22380469853741
n4 630704020948275121
n5 1.7773870014343E+22

Nth Root

y√n
2√n 167.87197502859
3√n 30.431180496492
4√n 12.956541785083
5√n 7.7623153085464

Divisors of 28181

1, 28181

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 28182
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 14091
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 167.87495346239
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999290327159
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28181 can be divided by 2 positive divisors. The sum of these divisors (counting 28181) is 28182, the average is 14091.

Base conversion 28181

Base System Value
2 Binary 110111000010101
3 Ternary 1102122202
4 Quaternary 12320111
5 Quinary 1400211
6 Senary 334245
8 Octal 67025
10 Decimal 28181
12 Duodecimal 14385
16 Hexadecimal 6e15
20 Vigesimal 3a91
36 Base36 lqt

Cryptographic Hash Functions

md5 f9e6aa5c93154c16fc5fa8382d8b8de6
sha1 9a341d767c702b11f4973e86dd148b476ec33b72
sha256 94e707edd4930e6ea213cd35f50faa2c3574777ae97256574f4089dab69ad7e0
sha512 8b2fc11767a13c738b3198c01de84f1326e97a8f16572b5ba49624f5108b5cca93da18223d8e47e5c502b491565defda0d13943e9a39f6ae8bebe008f4a16868
ripemd-160 387a9f493b11c369623981a911b684590d023abe

28181 as geometric shapes

Circle

Radius = n
Diameter 56362
Circumference 177066.44514163
Area 2494954745.2681

Sphere

Radius = n
Volume 93747092901867
Surface area 9979818981.0724
Circumference 177066.44514163

Square

Length = n
Perimeter 112724
Area 794168761
Diagonal 39853.952401236

Cube

Length = n
Surface area 4765012566
Volume 22380469853741
Space diagonal 48810.923808099

Equilateral Triangle

Length = n
Perimeter 84543
Area 343885160.95901
Altitude 24405.461904049

Triangular Pyramid

Length = n
Surface area 343885160.95901
Volume 2637563666620.2
Height 13284.650800412