20280821 (number)

20280821 is an odd 8-digits composite number following 20280820 and preceding 20280822. In scientific notation, it is written as 2.0280821 × 10^7. The sum of its digits is 23. It has a total of 4 prime factors and 16 positive divisors. There are 17646720 positive integers (up to 20280821) that are relatively prime to 20280821.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0280821 × 10^7
Engineering notation 2.0280821 × 10^6

Prime Factorization of 20280821

Prime Factorization 11 × 53 × 43 × 809

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20280821
Product of the distinct prime numbers

The prime factorization of 20280821 is 11 × 53 × 43 × 809. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 2, 12, 35, 393, 169, 5272, 6687, 63466, 35674, 633810, 431906, 1081554, 8256149, 35937214, 1184269, 715765808, 151965589, 6265385969, 1963677530

Basic calculations (n = 20280821)

Multiplication

n×y
n×2 40561642
n×3 60842463
n×4 81123284
n×5 101404105

Division

n÷y
n÷2 10140410.5
n÷3 6760273.6666667
n÷3 5070205.25
n÷5 4056164.2

Exponentiation

ny
n2 411311700434041
n3 8.3417389717084E+21
n4 1.6917731491394E+29
n5 3.4310548410303E+36

Nth Root

y√n
2√n 4503.4232534817
3√n 272.70630394677
4√n 67.10754989926
5√n 28.934574913097

Divisors of 20280821

1, 11, 43, 53, 473, 583, 809, 2279, 8899, 25069, 34787, 42877, 382657, 471647, 1843711, 20280821

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 -20280820
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 20280821 can be divided by 16 positive divisors. The sum of these divisors (counting 20280821) is 1, the average is 0.0625.

Base conversion 20280821

Base System Value
2 Binary 1001101010111010111110101
3 Ternary 1102011101001112
4 Quaternary 1031113113311
5 Quinary 20142441241
6 Senary 2002404405
8 Octal 115272765
10 Decimal 20280821
12 Duodecimal 6960705
16 Hexadecimal 13575f5
20 Vigesimal 66f211
36 Base36 c2os5

Cryptographic Hash Functions

md5 d5fa7fe73d127c6ffa6a610b68e3343b
sha1 78cd74d9095cbf742236379ffa315d8520975dde
sha256 948e784611d9f0143a19d0452b5aed6b42606e6c5b16fd8b3b2c8a35f48aeb3e
sha512 a75814245a00babb72168f68dc5ec04b34d31e32ba118898110d5ff6a50024b2a398babb22d6b84bb371882fb024476aa0e7aa55321250a006e890174973226e
ripemd-160 a6ef3f35fb8c8694040872857fa7bc80138ea219

20280821 as geometric shapes

Circle

Radius = n
Diameter 40561642
Circumference 127428156.52474
Area 1.2921738164191E+15

Sphere

Radius = n
Volume 3.4941794495577E+22
Surface area 5.1686952656764E+15
Circumference 127428156.52474

Square

Length = n
Perimeter 81123284
Area 411311700434041
Diagonal 28681412.114261

Cube

Length = n
Surface area 2467870202604246
Volume 8.3417389717084E+21
Space diagonal 35127412.39121

Equilateral Triangle

Length = n
Perimeter 60842463
Area 1.7810319072483E+14
Altitude 17563706.195605

Triangular Pyramid

Length = n
Surface area 1.7810319072483E+14
Volume 9.8308336563052E+20
Height 9560470.7047537