20387 (number)

20387 is an odd 5-digits composite number following 20386 and preceding 20388. In scientific notation, it is written as 2.0387 × 10^4. The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors. There are 18144 positive integers (up to 20387) that are relatively prime to 20387.

Interesting facts

Basic properties

Name

Name twenty thousand three hundred eighty-seven

Notation

Scientific notation 2.0387 × 10^4
Engineering notation 2.0387 × 10^3

Prime Factorization of 20387

Prime Factorization 37 × 19 × 29

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 20387
Product of the distinct prime numbers

The prime factorization of 20387 is 37 × 19 × 29. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 8, 41, 96, 608, 59, 9789, 7583, 38234, 88110, 247003, 224539, 8619481, 4685857, 43773540, 77911668, 931226391, 195293586, 4371201680, 7578263830

Basic calculations (n = 20387)

Multiplication

n×y
n×2 40774
n×3 61161
n×4 81548
n×5 101935

Division

n÷y
n÷2 10193.5
n÷3 6795.6666666667
n÷3 5096.75
n÷5 4077.4

Exponentiation

ny
n2 415629769
n3 8473444100603
n4 172748104878993361
n5 3.521815614168E+21

Nth Root

y√n
2√n 142.78305221559
3√n 27.318138821824
4√n 11.949186257465
5√n 7.2756309975843

Divisors of 20387

1, 19, 29, 37, 551, 703, 1073, 20387

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 -20386
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 20387 can be divided by 8 positive divisors. The sum of these divisors (counting 20387) is 1, the average is 0.125.

Base conversion 20387

Base System Value
2 Binary 100111110100011
3 Ternary 1000222002
4 Quaternary 10332203
5 Quinary 1123022
6 Senary 234215
8 Octal 47643
10 Decimal 20387
12 Duodecimal b96b
16 Hexadecimal 4fa3
20 Vigesimal 2aj7
36 Base36 fqb

Cryptographic Hash Functions

md5 8f1598093c04c82a4dbf0211ede8ed10
sha1 190c6b3a0256b4e3ec2aab07b630d8c90ed6a56a
sha256 3ab10a792eb2663517af35de30cbc5afbeeac42a73726e1b17259211731c64af
sha512 87413673efa1e1cb3d05323500f2910febc59004a89d93724a5b7692306066ed7163f570e7df35eb456f3717f0d5bb8e9c8ad45a318bee3389fa6425877c6d04
ripemd-160 37db3f85afb12dec068c7c4a2d4d43d45337f154

20387 as geometric shapes

Circle

Radius = n
Diameter 40774
Circumference 128095.29885747
Area 1305739428.9036

Sphere

Radius = n
Volume 35493479649411
Surface area 5222957715.6145
Circumference 128095.29885747

Square

Length = n
Perimeter 81548
Area 415629769
Diagonal 28831.5718961

Cube

Length = n
Surface area 2493778614
Volume 8473444100603
Space diagonal 35311.319813907

Equilateral Triangle

Length = n
Perimeter 61161
Area 179972969.26153
Altitude 17655.659906953

Triangular Pyramid

Length = n
Surface area 179972969.26153
Volume 998604963923.59
Height 9610.5239653668