20191 (number)

20191 is an odd 5-digits composite number following 20190 and preceding 20192. In scientific notation, it is written as 2.0191 × 10^4. The sum of its digits is 13. It has a total of 2 prime factors and 4 positive divisors. There are 19800 positive integers (up to 20191) that are relatively prime to 20191.

Interesting facts

Basic properties

Name

Name twenty thousand one hundred ninety-one

Notation

Scientific notation 2.0191 × 10^4
Engineering notation 2.0191 × 10^3

Prime Factorization of 20191

Prime Factorization 61 × 331

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 20191
Product of the distinct prime numbers

The prime factorization of 20191 is 61 × 331. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 8, 78, 51, 197, 631, 2411, 5832, 40831, 12811, 161075, 71705, 3438443, 3799228, 23793327, 39090415, 661972118, 705033500, 3095684960, 3576067634

Basic calculations (n = 20191)

Multiplication

n×y
n×2 40382
n×3 60573
n×4 80764
n×5 100955

Division

n÷y
n÷2 10095.5
n÷3 6730.3333333333
n÷3 5047.75
n÷5 4038.2

Exponentiation

ny
n2 407676481
n3 8231395827871
n4 166200113160543361
n5 3.3557464848245E+21

Nth Root

y√n
2√n 142.09503861852
3√n 27.230311508383
4√n 11.920362352652
5√n 7.2615873479786

Divisors of 20191

1, 61, 331, 20191

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 -20190
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 20191 can be divided by 4 positive divisors. The sum of these divisors (counting 20191) is 1, the average is 0.25.

Base conversion 20191

Base System Value
2 Binary 100111011011111
3 Ternary 1000200211
4 Quaternary 10323133
5 Quinary 1121231
6 Senary 233251
8 Octal 47337
10 Decimal 20191
12 Duodecimal b827
16 Hexadecimal 4edf
20 Vigesimal 2a9b
36 Base36 fkv

Cryptographic Hash Functions

md5 a1fade199025fafa3a4a6ce532252639
sha1 145dacedee400b629bda4009ce3c22f72f36993a
sha256 18457d56c04bc061fcc2fe38e7eedb79d9614385457d0d0aba32f572504f6087
sha512 98ba4d6b8b8420296188139bf5e4d4d1a5a1eb10d829d80acee4e1ff100d9f6d66bc091bd2d39d7e1aa03961796795be46592c6b0e248e49ec792c6860b5612b
ripemd-160 a3b14e1ec2b44052b0377c6b12ad4521931a79ac

20191 as geometric shapes

Circle

Radius = n
Diameter 40382
Circumference 126863.79453726
Area 1280753437.7509

Sphere

Radius = n
Volume 34479590215506
Surface area 5123013751.0038
Circumference 126863.79453726

Square

Length = n
Perimeter 80764
Area 407676481
Diagonal 28554.386037875

Cube

Length = n
Surface area 2446058886
Volume 8231395827871
Space diagonal 34971.837855623

Equilateral Triangle

Length = n
Perimeter 60573
Area 176529094.53572
Altitude 17485.918927812

Triangular Pyramid

Length = n
Surface area 176529094.53572
Volume 970079301419.71
Height 9518.1286792917