205121990 (number)

205121990 is an even 9-digits composite number following 205121989 and preceding 205121991. In scientific notation, it is written as 2.05121990 × 10^8. The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors. There are 82048792 positive integers (up to 205121990) that are relatively prime to 205121990.

Interesting facts

Basic properties

Name

Name two hundred five million one hundred twenty-one thousand nine hundred ninety

Notation

Scientific notation 2.05121990 × 10^8
Engineering notation 2.05121990 × 10^6

Prime Factorization of 205121990

Prime Factorization 2 × 5 × 20512199

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 205121990
Product of the distinct prime numbers

The prime factorization of 205121990 is 2 × 5 × 20512199. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 8, 80, 9, 721, 892, 2588, 9428, 89521, 71595, 167383, 607959, 2573405, 8037165, 32583734, 87401814, 929347178, 146473555, 1740669956, 2735352879

Basic calculations (n = 205121990)

Multiplication

n×y
n×2 410243980
n×3 615365970
n×4 820487960
n×5 1025609950

Division

n÷y
n÷2 102560995
n÷3 68373996.666667
n÷3 51280497.5
n÷5 41024398

Exponentiation

ny
n2 42075030781560100
n3 8.6305140432249E+24
n4 1.7703082152692E+33
n5 3.6312914402937E+41

Nth Root

y√n
2√n 14322.08050529
3√n 589.75378982907
4√n 119.67489505026
5√n 45.96237314506

Divisors of 205121990

1, 2, 5, 10, 20512199, 41024398, 102560995, 205121990

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 -205121989
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 205121990 can be divided by 8 positive divisors. The sum of these divisors (counting 205121990) is 1, the average is 0.125.

Base conversion 205121990

Base System Value
2 Binary 1100001110011110100111000110
3 Ternary 112021222021110202
4 Quaternary 30032132213012
5 Quinary 410002400430
6 Senary 32204250502
8 Octal 1416364706
10 Decimal 205121990
12 Duodecimal 58840a32
16 Hexadecimal c39e9c6
20 Vigesimal 34204ja
36 Base36 3e4h52

Cryptographic Hash Functions

md5 77e082f4e993bf1feec5f00ec49b6549
sha1 4e500360699ff86535ca5bcade9a33306b3fca6a
sha256 2b7d0d216e7cd09da65a53c0809bbf150f01409d4aa6a2c9e4c2eee57007a8da
sha512 dc48a4ae38611cdef7bca7c190e68b1400e9b48fc543b0f924bee0b6d8bdeebd0d461eba7b64224148c90d9a6bfb40670bfbe24fc6cef1d70bb097932fe65a70
ripemd-160 afbaf0d31864938da6ba18b34a5ee9ace36fa877

205121990 as geometric shapes

Circle

Radius = n
Diameter 410243980
Circumference 1288819473.7474
Area 1.3218260760291E+17

Sphere

Radius = n
Volume 3.6151412686532E+25
Surface area 5.2873043041165E+17
Circumference 1288819473.7474

Square

Length = n
Perimeter 820487960
Area 42075030781560100
Diagonal 290086300.19896

Cube

Length = n
Surface area 252450184689360600
Volume 8.6305140432249E+24
Space diagonal 355281708.42964

Equilateral Triangle

Length = n
Perimeter 615365970
Area 1.8219022760922E+16
Altitude 177640854.21482

Triangular Pyramid

Length = n
Surface area 1.8219022760922E+16
Volume 1.0171158341817E+24
Height 96695433.399653