15985 (number)

15985 is an odd 5-digits composite number following 15984 and preceding 15986. In scientific notation, it is written as 1.5985 × 10^4. The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors. There are 12144 positive integers (up to 15985) that are relatively prime to 15985.

Interesting facts

Basic properties

Name

Name fifteen thousand nine hundred eighty-five

Notation

Scientific notation 1.5985 × 10^4
Engineering notation 1.5985 × 10^3

Prime Factorization of 15985

Prime Factorization 23 × 5 × 139

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 15985
Product of the distinct prime numbers

The prime factorization of 15985 is 23 × 5 × 139. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 9, 81, 80, 888, 883, 9704, 2712, 75738, 10451, 611307, 56221, 3347703, 7624728, 24113246, 70995868, 229925157, 265359668, 8239683507, 9842234988

Basic calculations (n = 15985)

Multiplication

n×y
n×2 31970
n×3 47955
n×4 63940
n×5 79925

Division

n÷y
n÷2 7992.5
n÷3 5328.3333333333
n÷3 3996.25
n÷5 3197

Exponentiation

ny
n2 255520225
n3 4084490796625
n4 65290585384050625
n5 1.043670007364E+21

Nth Root

y√n
2√n 126.43179979736
3√n 25.19054402927
4√n 11.244189601628
5√n 6.9301482973288

Divisors of 15985

1, 5, 23, 115, 139, 695, 3197, 15985

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 -15984
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 15985 can be divided by 8 positive divisors. The sum of these divisors (counting 15985) is 1, the average is 0.125.

Base conversion 15985

Base System Value
2 Binary 11111001110001
3 Ternary 210221001
4 Quaternary 3321301
5 Quinary 1002420
6 Senary 202001
8 Octal 37161
10 Decimal 15985
12 Duodecimal 9301
16 Hexadecimal 3e71
20 Vigesimal 1jj5
36 Base36 cc1

Cryptographic Hash Functions

md5 3beeab85046ca201d73bb9d129bcfc3f
sha1 d45de2819b789a95535d2f1dbbf39067cc768a61
sha256 67c47a415aaa3de47b92c5646e5219ae7ee06babdc98488eb77a26826ecc0af6
sha512 0c6edc1ba2d25d64f777500a82f6a8b4fb108d7de66771cfb276d9f05132b6e2bd9b9b62366b4ada50148bd21412fda91e4bc432a07f79f650ecc4e5dd810e11
ripemd-160 624391f95487aae49a73ef72dfc3e790de27513b

15985 as geometric shapes

Circle

Radius = n
Diameter 31970
Circumference 100436.71713527
Area 802740461.70361

Sphere

Radius = n
Volume 17109075040443
Surface area 3210961846.8144
Circumference 100436.71713527

Square

Length = n
Perimeter 63940
Area 255520225
Diagonal 22606.203794534

Cube

Length = n
Surface area 1533121350
Volume 4084490796625
Space diagonal 27686.832158989

Equilateral Triangle

Length = n
Perimeter 47955
Area 110643503.01536
Altitude 13843.416079494

Triangular Pyramid

Length = n
Surface area 110643503.01536
Volume 481361856664.6
Height 7535.4012648446