20986 (number)

20986 is an even 5-digits composite number following 20985 and preceding 20987. In scientific notation, it is written as 2.0986 × 10^4. The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors. There are 8988 positive integers (up to 20986) that are relatively prime to 20986.

Interesting facts

Basic properties

Name

Name twenty thousand nine hundred eighty-six

Notation

Scientific notation 2.0986 × 10^4
Engineering notation 2.0986 × 10^3

Prime Factorization of 20986

Prime Factorization 2 × 7 × 1499

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 20986
Product of the distinct prime numbers

The prime factorization of 20986 is 2 × 7 × 1499. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 5, 88, 2, 337, 399, 5393, 8230, 6592, 56595, 739132, 105562, 9704433, 4063150, 77484253, 48415187, 4421604, 499305375, 2353001337, 9587867655

Basic calculations (n = 20986)

Multiplication

n×y
n×2 41972
n×3 62958
n×4 83944
n×5 104930

Division

n÷y
n÷2 10493
n÷3 6995.3333333333
n÷3 5246.5
n÷5 4197.2

Exponentiation

ny
n2 440412196
n3 9242490345256
n4 193962902385542416
n5 4.070505469463E+21

Nth Root

y√n
2√n 144.86545481929
3√n 27.583109458261
4√n 12.036006597676
5√n 7.3178909549033

Divisors of 20986

1, 2, 7, 14, 1499, 2998, 10493, 20986

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 -20985
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 20986 can be divided by 8 positive divisors. The sum of these divisors (counting 20986) is 1, the average is 0.125.

Base conversion 20986

Base System Value
2 Binary 101000111111010
3 Ternary 1001210021
4 Quaternary 11013322
5 Quinary 1132421
6 Senary 241054
8 Octal 50772
10 Decimal 20986
12 Duodecimal 1018a
16 Hexadecimal 51fa
20 Vigesimal 2c96
36 Base36 g6y

Cryptographic Hash Functions

md5 82b70f2721b40dc07415e12bd6c12a33
sha1 c964a667086aca02ce16c1a677533b09e0bb3957
sha256 ec17af90364d39b12240dcadc28083af90e894c1b5bbde5b46a3489f523e3789
sha512 86ac9e94337d471a2e2d55b2176c9e696cd3f94396de6a1818ef1b9a8e1bcbeef38aec683fd95c3e8116fbd200b9b9cb0af6c0894e00998cb78231db58f439cc
ripemd-160 4b27cab751577584a4aeadf227036fbcd58e1f9f

20986 as geometric shapes

Circle

Radius = n
Diameter 41972
Circumference 131858.92685647
Area 1383595719.5049

Sphere

Radius = n
Volume 38714853026041
Surface area 5534382878.0198
Circumference 131858.92685647

Square

Length = n
Perimeter 83944
Area 440412196
Diagonal 29678.685819962

Cube

Length = n
Surface area 2642473176
Volume 9242490345256
Space diagonal 36348.81824764

Equilateral Triangle

Length = n
Perimeter 62958
Area 190704074.93625
Altitude 18174.40912382

Triangular Pyramid

Length = n
Surface area 190704074.93625
Volume 1089237933030.3
Height 9892.8952733206