20081985 (number)

20081985 is an odd 8-digits composite number following 20081984 and preceding 20081986. In scientific notation, it is written as 2.0081985 × 10^7. The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors. There are 8345280 positive integers (up to 20081985) that are relatively prime to 20081985.

Interesting facts

Basic properties

Name

Name twenty million eighty-one thousand nine hundred eighty-five

Notation

Scientific notation 2.0081985 × 10^7
Engineering notation 2.0081985 × 10^6

Prime Factorization of 20081985

Prime Factorization 5 × 21 × 11 × 17387

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20081985
Product of the distinct prime numbers

The prime factorization of 20081985 is 5 × 21 × 11 × 17387. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 8, 83, 13, 408, 304, 1977, 910, 19842, 74587, 791459, 982768, 9794767, 272717, 73439815, 49332599, 174225033, 903599813, 2992718258, 5311435093

Basic calculations (n = 20081985)

Multiplication

n×y
n×2 40163970
n×3 60245955
n×4 80327940
n×5 100409925

Division

n÷y
n÷2 10040992.5
n÷3 6693995
n÷3 5020496.25
n÷5 4016397

Exponentiation

ny
n2 403286121540225
n3 8.098785843479E+21
n4 1.6263969582696E+29
n5 3.2661279320015E+36

Nth Root

y√n
2√n 4481.2927822226
3√n 271.81215855027
4√n 66.942458740493
5√n 28.877615374969

Divisors of 20081985

1, 5, 11, 21, 55, 105, 231, 1155, 17387, 86935, 191257, 365127, 956285, 1825635, 4016397, 20081985

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20081984
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20081985 can be divided by 16 positive divisors. The sum of these divisors (counting 20081985) is 1, the average is 0.0625.

Base conversion 20081985

Base System Value
2 Binary 1001100100110110101000001
3 Ternary 1101210021022020
4 Quaternary 1030212311001
5 Quinary 20120110420
6 Senary 1554232053
8 Octal 114466501
10 Decimal 20081985
12 Duodecimal 6885629
16 Hexadecimal 1326d41
20 Vigesimal 65a4j5
36 Base36 byfcx

Cryptographic Hash Functions

md5 ce47cb6054c8f99388c5495e71e49329
sha1 203f13d7dec981fd090a0a30e045fcd24fe0cb92
sha256 7df0bdcf0b4887e74c2530ccadba804ae2224a18308a7b1561aee651a4d1a0eb
sha512 299a1dbd94c2713d8e13c7d663d5e1cf990abcca37ba87f71e175685448442ad2939e8f054d319598bc6de77ea5331f39c26e8b3902cead4661d237cf3f6d129
ripemd-160 516fb4ef45b5f20cc9d4084468b26b36bb355aa8

20081985 as geometric shapes

Circle

Radius = n
Diameter 40163970
Circumference 126178833.091
Area 1.2669607167255E+15

Sphere

Radius = n
Volume 3.3924114811827E+22
Surface area 5.067842866902E+15
Circumference 126178833.091

Square

Length = n
Perimeter 80327940
Area 403286121540225
Diagonal 28400215.546373

Cube

Length = n
Surface area 2419716729241350
Volume 8.098785843479E+21
Space diagonal 34783018.336836

Equilateral Triangle

Length = n
Perimeter 60245955
Area 1.7462801312377E+14
Altitude 17391509.168418

Triangular Pyramid

Length = n
Surface area 1.7462801312377E+14
Volume 9.544510648836E+20
Height 9466738.5154577