21809538 (number)

21809538 is an even 8-digits composite number following 21809537 and preceding 21809539. In scientific notation, it is written as 2.1809538 × 10^7. The sum of its digits is 36. It has a total of 6 prime factors and 48 positive divisors. There are 6791040 positive integers (up to 21809538) that are relatively prime to 21809538.

Interesting facts

Basic properties

Name

Name twenty-one million eight hundred nine thousand five hundred thirty-eight

Notation

Scientific notation 2.1809538 × 10^7
Engineering notation 2.1809538 × 10^6

Prime Factorization of 21809538

Prime Factorization 2 × 3 × 3 × 17 × 263 × 271

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 7269846
Product of the distinct prime numbers

The prime factorization of 21809538 is 2 × 3 × 3 × 17 × 263 × 271. Since it has a total of 6 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21809538)

Multiplication

n×y
n×2 43619076
n×3 65428614
n×4 87238152
n×5 109047690

Division

n÷y
n÷2 10904769
n÷3 7269846
n÷3 5452384.5
n÷5 4361907.6

Exponentiation

ny
n2 475655947773444
n3 1.0373836467891E+22
n4 2.2624858065225E+29
n5 4.9343770171814E+36

Nth Root

y√n
2√n 4670.0683078516
3√n 279.39297918915
4√n 68.33789803507
5√n 29.358191105552

Divisors of 21809538

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21809537
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21809538 can be divided by 48 positive divisors. The sum of these divisors (counting 21809538) is 1, the average is 0.020833333333333.

Base conversion 21809538

Base System Value
2 Binary 1010011001100100110000010
3 Ternary 1112001001001200
4 Quaternary 1103030212002
5 Quinary 21040401123
6 Senary 2055242030
8 Octal 123144602
10 Decimal 21809538
12 Duodecimal 7379316
16 Hexadecimal 14cc982
20 Vigesimal 6g63gi
36 Base36 czgci

Cryptographic Hash Functions

md5 3bac863b4c8da1f1166902bd35ad6997
sha1 c77dcd6868ce578e4f3a3baa6fa129e05f47dea9
sha256 9893b8259ab71b5a251884d74069efd4c257818d2526c6959ae340c7bc38aa2f
sha512 713739c7520f064b940574d3d003c2dd7a7cb77d7612fc33c6185b040b91728c7e90b67c5dbbc128fb9d1d513d75dc48cf3642f0eb979161d86964fbf989b45e
ripemd-160 3c04cfcfa1dd04db5fceb0396eec14cbdbbdbb78

21809538 as geometric shapes

Circle

Radius = n
Diameter 43619076
Circumference 137033368.71797
Area 1.4943172311613E+15

Sphere

Radius = n
Volume 4.3453824582757E+22
Surface area 5.9772689246454E+15
Circumference 137033368.71797

Square

Length = n
Perimeter 87238152
Area 475655947773444
Diagonal 30843344.428691

Cube

Length = n
Surface area 2853935686640664
Volume 1.0373836467891E+22
Space diagonal 37775227.905604

Equilateral Triangle

Length = n
Perimeter 65428614
Area 2.0596506711648E+14
Altitude 18887613.952802

Triangular Pyramid

Length = n
Surface area 2.0596506711648E+14
Volume 1.2225683522277E+21
Height 10281114.809564