205120821 (number)

205120821 is an odd 9-digits composite number following 205120820 and preceding 205120822. In scientific notation, it is written as 2.05120821 × 10^8. The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors. There are 136030880 positive integers (up to 205120821) that are relatively prime to 205120821.

Interesting facts

Basic properties

Name

Name two hundred five million one hundred twenty thousand eight hundred twenty-one

Notation

Scientific notation 2.05120821 × 10^8
Engineering notation 2.05120821 × 10^6

Prime Factorization of 205120821

Prime Factorization 3 × 191 × 357977

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 205120821
Product of the distinct prime numbers

The prime factorization of 205120821 is 3 × 191 × 357977. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 8, 83, 42, 44, 95, 6071, 8851, 96837, 4879, 19252, 677042, 9269268, 2879225, 92167985, 20296055, 558014654, 755832875, 7202278758, 6100161821

Basic calculations (n = 205120821)

Multiplication

n×y
n×2 410241642
n×3 615362463
n×4 820483284
n×5 1025604105

Division

n÷y
n÷2 102560410.5
n÷3 68373607
n÷3 51280205.25
n÷5 41024164.2

Exponentiation

ny
n2 42074551207714041
n3 8.6303664869328E+24
n4 1.7702678593306E+33
n5 3.631187966958E+41

Nth Root

y√n
2√n 14322.039694122
3√n 589.75266948196
4√n 119.67472454166
5√n 45.962320756589

Divisors of 205120821

1, 3, 191, 573, 357977, 1073931, 68373607, 205120821

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 -205120820
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 205120821 can be divided by 8 positive divisors. The sum of these divisors (counting 205120821) is 1, the average is 0.125.

Base conversion 205120821

Base System Value
2 Binary 1100001110011110010100110101
3 Ternary 112021222012212110
4 Quaternary 30032132110311
5 Quinary 410002331241
6 Senary 32204241233
8 Octal 1416362465
10 Decimal 205120821
12 Duodecimal 58840219
16 Hexadecimal c39e535
20 Vigesimal 3420211
36 Base36 3e4g8l

Cryptographic Hash Functions

md5 393f57a2eab0b3d00e3f88e0167b5af5
sha1 dffe6bfb20ef367332406fd28ac23fce3b8a3c21
sha256 b24f623a9061bcfe4a7d71888f18550f9294d5192779e98e8443eb82bae7f655
sha512 40538b02c5ab42d00753e5ea80a5a2c12735918e64c0e0c622f5e803cecf7c3538809105c687909cef0d0c750d51bb82ff4161c6f4882909c4a22f3dd3ca97d0
ripemd-160 26dffdafd8ef803e107c9b81f1f71256249f971a

205120821 as geometric shapes

Circle

Radius = n
Diameter 410241642
Circumference 1288812128.7038
Area 1.3218110097724E+17

Sphere

Radius = n
Volume 3.6150794604181E+25
Surface area 5.2872440390897E+17
Circumference 1288812128.7038

Square

Length = n
Perimeter 820483284
Area 42074551207714041
Diagonal 290084646.9833

Cube

Length = n
Surface area 252447307246284246
Volume 8.6303664869328E+24
Space diagonal 355279683.66224

Equilateral Triangle

Length = n
Perimeter 615362463
Area 1.8218815099355E+16
Altitude 177639841.83112

Triangular Pyramid

Length = n
Surface area 1.8218815099355E+16
Volume 1.0170984445059E+24
Height 96694882.327768