19985 (number)

19985 is an odd 5-digits composite number following 19984 and preceding 19986. In scientific notation, it is written as 1.9985 × 10^4. The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors. There are 13680 positive integers (up to 19985) that are relatively prime to 19985.

Interesting facts

Basic properties

Name

Name nineteen thousand nine hundred eighty-five

Notation

Scientific notation 1.9985 × 10^4
Engineering notation 1.9985 × 10^3

Prime Factorization of 19985

Prime Factorization 7 × 5 × 571

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 19985
Product of the distinct prime numbers

The prime factorization of 19985 is 7 × 5 × 571. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 6, 15, 37, 673, 100, 8396, 1623, 49534, 30831, 88946, 261840, 3054710, 5488134, 13073898, 62864007, 4215121, 204425526, 6058747401, 7849096195

Basic calculations (n = 19985)

Multiplication

n×y
n×2 39970
n×3 59955
n×4 79940
n×5 99925

Division

n÷y
n÷2 9992.5
n÷3 6661.6666666667
n÷3 4996.25
n÷5 3997

Exponentiation

ny
n2 399400225
n3 7982013496625
n4 159520539730050625
n5 3.1880179865051E+21

Nth Root

y√n
2√n 141.3683132813
3√n 27.137388424689
4√n 11.889840759291
5√n 7.2467091409837

Divisors of 19985

1, 5, 7, 35, 571, 2855, 3997, 19985

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 -19984
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 19985 can be divided by 8 positive divisors. The sum of these divisors (counting 19985) is 1, the average is 0.125.

Base conversion 19985

Base System Value
2 Binary 100111000010001
3 Ternary 1000102012
4 Quaternary 10320101
5 Quinary 1114420
6 Senary 232305
8 Octal 47021
10 Decimal 19985
12 Duodecimal b695
16 Hexadecimal 4e11
20 Vigesimal 29j5
36 Base36 ff5

Cryptographic Hash Functions

md5 adf2e0a8e2b1a07ccc72645ad04f52ff
sha1 912ce064da64fd34c572e7424d59e44b6278b79f
sha256 3abb3cb0be20292401b6889bda1673a5f7194b4616fe15ec52202105c7ffba94
sha512 cc7ed939cf522811fa5371d6c9877b545b81914888d4f502678a4c10f941becb8dc83dc94d8efa9612e9c87780a0961aee102c9df4caaac0df73ee05e7f47592
ripemd-160 e064c1aeffb434a683da564feaba3f1e32f9b4a1

19985 as geometric shapes

Circle

Radius = n
Diameter 39970
Circumference 125569.45836398
Area 1254752812.7021

Sphere

Radius = n
Volume 33434979949136
Surface area 5019011250.8084
Circumference 125569.45836398

Square

Length = n
Perimeter 79940
Area 399400225
Diagonal 28263.058044026

Cube

Length = n
Surface area 2396401350
Volume 7982013496625
Space diagonal 34615.035389264

Equilateral Triangle

Length = n
Perimeter 59955
Area 172945370.56361
Altitude 17307.517694632

Triangular Pyramid

Length = n
Surface area 172945370.56361
Volume 940689311831.01
Height 9421.0193480088