20487 (number)

20487 is an odd 5-digits composite number following 20486 and preceding 20488. In scientific notation, it is written as 2.0487 × 10^4. The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors. There are 13656 positive integers (up to 20487) that are relatively prime to 20487.

Interesting facts

Basic properties

Name

Name twenty thousand four hundred eighty-seven

Notation

Scientific notation 2.0487 × 10^4
Engineering notation 2.0487 × 10^3

Prime Factorization of 20487

Prime Factorization 3 × 6829

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 20487
Product of the distinct prime numbers

The prime factorization of 20487 is 3 × 6829. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 3, 87, 65, 669, 120, 1678, 7008, 55377, 66641, 359745, 446894, 8980166, 8367237, 52515033, 58829754, 723579734, 513164277, 5921122229, 7940945197

Basic calculations (n = 20487)

Multiplication

n×y
n×2 40974
n×3 61461
n×4 81948
n×5 102435

Division

n÷y
n÷2 10243.5
n÷3 6829
n÷3 5121.75
n÷5 4097.4

Exponentiation

ny
n2 419717169
n3 8598745641303
n4 176162501953374561
n5 3.6090411775188E+21

Nth Root

y√n
2√n 143.13280546402
3√n 27.362731935404
4√n 11.963812329856
5√n 7.2827545545825

Divisors of 20487

1, 3, 6829, 20487

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 -20486
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 20487 can be divided by 4 positive divisors. The sum of these divisors (counting 20487) is 1, the average is 0.25.

Base conversion 20487

Base System Value
2 Binary 101000000000111
3 Ternary 1001002210
4 Quaternary 11000013
5 Quinary 1123422
6 Senary 234503
8 Octal 50007
10 Decimal 20487
12 Duodecimal ba33
16 Hexadecimal 5007
20 Vigesimal 2b47
36 Base36 ft3

Cryptographic Hash Functions

md5 642f0ffa02e1a52c66e09344421903ff
sha1 02bb6a144f867fef1f65daf835da6c5da70bb4db
sha256 044ac5a875649c467f0c51383effa95585a5438678ec15c278c9a2fe7ea79f94
sha512 530b96fb08dae7b8c22d09618580b338822d63a172da585b010491851c2228743e871fef234414ba2bc983319d1465de14a5ecc54454c9e30b4f1b1049fe26b3
ripemd-160 f3e8f600092ea534fc909f7f0dafc2814f9eb6da

20487 as geometric shapes

Circle

Radius = n
Diameter 40974
Circumference 128723.61738819
Area 1318580374.7159

Sphere

Radius = n
Volume 36018341515740
Surface area 5274321498.8636
Circumference 128723.61738819

Square

Length = n
Perimeter 81948
Area 419717169
Diagonal 28972.993252338

Cube

Length = n
Surface area 2518303014
Volume 8598745641303
Space diagonal 35484.524894664

Equilateral Triangle

Length = n
Perimeter 61461
Area 181742865.37924
Altitude 17742.262447332

Triangular Pyramid

Length = n
Surface area 181742865.37924
Volume 1013371892110.6
Height 9657.6644174459