21568281 (number)

21568281 is an odd 8-digits composite number following 21568280 and preceding 21568282. In scientific notation, it is written as 2.1568281 × 10^7. The sum of its digits is 33. It has a total of 5 prime factors and 24 positive divisors. There are 11924640 positive integers (up to 21568281) that are relatively prime to 21568281.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1568281 × 10^7
Engineering notation 2.1568281 × 10^6

Prime Factorization of 21568281

Prime Factorization 3 × 31 × 7 × 7 × 4733

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 3081183
Product of the distinct prime numbers

The prime factorization of 21568281 is 3 × 31 × 7 × 7 × 4733. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 5, 26, 22, 101, 72, 5526, 7941, 10336, 67128, 119227, 701034, 8729911, 9587301, 21915306, 46886678, 751984823, 212965460, 2240280182, 6898542939

Basic calculations (n = 21568281)

Multiplication

n×y
n×2 43136562
n×3 64704843
n×4 86273124
n×5 107841405

Division

n÷y
n÷2 10784140.5
n÷3 7189427
n÷3 5392070.25
n÷5 4313656.2

Exponentiation

ny
n2 465190745294961
n3 1.0033364713121E+22
n4 2.1640242950808E+29
n5 4.667428408713E+36

Nth Root

y√n
2√n 4644.1663406902
3√n 278.35894234908
4√n 68.148120595437
5√n 29.292949750944

Divisors of 21568281

1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4557, 4733, 14199, 33131, 99393, 146723, 231917, 440169, 695751, 1027061, 3081183, 7189427, 21568281

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21568280
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21568281 can be divided by 24 positive divisors. The sum of these divisors (counting 21568281) is 1, the average is 0.041666666666667.

Base conversion 21568281

Base System Value
2 Binary 1010010010001101100011001
3 Ternary 1111120210010020
4 Quaternary 1102101230121
5 Quinary 21010141111
6 Senary 2050141053
8 Octal 122215431
10 Decimal 21568281
12 Duodecimal 7281789
16 Hexadecimal 1491b19
20 Vigesimal 6eg0e1
36 Base36 cua6x

Cryptographic Hash Functions

md5 b08158ad47f4c1cf615ddfca5b797cab
sha1 a390331d77dee5ad91c2b6875afa68af4558c169
sha256 21569fd1128454bab601768652f4dcb7611d311b8e0d52da0d2201495c97af27
sha512 bde4db7e110ba0092edfa8b4239ec0af43904be41ba6b2bea635378c4712b9a67faa16ae283dbc5119264e8c0db9e7eaa826503d685a48c23bef1043ff3632b7
ripemd-160 2f3763f1db50d0c15963c85a00985214283c3fe5

21568281 as geometric shapes

Circle

Radius = n
Diameter 43136562
Circumference 135517506.28032
Area 1.4614398279366E+15

Sphere

Radius = n
Volume 4.2027659831371E+22
Surface area 5.8457593117464E+15
Circumference 135517506.28032

Square

Length = n
Perimeter 86273124
Area 465190745294961
Diagonal 30502155.507274

Cube

Length = n
Surface area 2791144471769766
Volume 1.0033364713121E+22
Space diagonal 37357358.523922

Equilateral Triangle

Length = n
Perimeter 64704843
Area 2.0143350151543E+14
Altitude 18678679.261961

Triangular Pyramid

Length = n
Surface area 2.0143350151543E+14
Volume 1.1824433711276E+21
Height 10167385.169091