28191 (number)

28191 is an odd 5-digits composite number following 28190 and preceding 28192. In scientific notation, it is written as 2.8191 × 10^4. The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors. There are 18792 positive integers (up to 28191) that are relatively prime to 28191.

Interesting facts

Basic properties

Name

Name twenty-eight thousand one hundred ninety-one

Notation

Scientific notation 2.8191 × 10^4
Engineering notation 2.8191 × 10^3

Prime Factorization of 28191

Prime Factorization 3 × 9397

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 28191
Product of the distinct prime numbers

The prime factorization of 28191 is 3 × 9397. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 7, 87, 72, 487, 848, 4037, 373, 9541, 33363, 286234, 807302, 2014719, 7673571, 23208319, 28836699, 752682399, 291505074, 506183215, 5263722665

Basic calculations (n = 28191)

Multiplication

n×y
n×2 56382
n×3 84573
n×4 112764
n×5 140955

Division

n÷y
n÷2 14095.5
n÷3 9397
n÷3 7047.75
n÷5 5638.2

Exponentiation

ny
n2 794732481
n3 22404303371871
n4 631599716356415361
n5 1.7805427603804E+22

Nth Root

y√n
2√n 167.90175698902
3√n 30.434779562259
4√n 12.957691036177
5√n 7.7628661203531

Divisors of 28191

1, 3, 9397, 28191

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 -28190
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 28191 can be divided by 4 positive divisors. The sum of these divisors (counting 28191) is 1, the average is 0.25.

Base conversion 28191

Base System Value
2 Binary 110111000011111
3 Ternary 1102200010
4 Quaternary 12320133
5 Quinary 1400231
6 Senary 334303
8 Octal 67037
10 Decimal 28191
12 Duodecimal 14393
16 Hexadecimal 6e1f
20 Vigesimal 3a9b
36 Base36 lr3

Cryptographic Hash Functions

md5 06efc3b2376e4b23e284094112b8ce94
sha1 431ce478f411c3ed56739ca2ca543c64758c170d
sha256 c32a13b7fb76515ff14322fa1d7c441a4cad78f73c26b69403008f10d0e3fe50
sha512 447f3b20a3299e69efbf39f23bc77608d9c2645798121fca770e078a0137c303d558609dc8fac211181d1e60e6d561640b6c774e71bda4e960aead505b34955f
ripemd-160 6ad7bae72d9cc1943faa5df3bd8857ce15e0f406

28191 as geometric shapes

Circle

Radius = n
Diameter 56382
Circumference 177129.2769947
Area 2496725723.8788

Sphere

Radius = n
Volume 93846926509156
Surface area 9986902895.5152
Circumference 177129.2769947

Square

Length = n
Perimeter 112764
Area 794732481
Diagonal 39868.09453686

Cube

Length = n
Surface area 4768394886
Volume 22404303371871
Space diagonal 48828.244316174

Equilateral Triangle

Length = n
Perimeter 84573
Area 344129258.87932
Altitude 24414.122158087

Triangular Pyramid

Length = n
Surface area 344129258.87932
Volume 2640372473668.4
Height 13289.36484562