21787131 (number)

21787131 is an odd 8-digits composite number following 21787130 and preceding 21787132. In scientific notation, it is written as 2.1787131 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 14226240 positive integers (up to 21787131) that are relatively prime to 21787131.

Interesting facts

Basic properties

Name

Name twenty-one million seven hundred eighty-seven thousand one hundred thirty-one

Notation

Scientific notation 2.1787131 × 10^7
Engineering notation 2.1787131 × 10^6

Prime Factorization of 21787131

Prime Factorization 3 × 71 × 439 × 233

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21787131
Product of the distinct prime numbers

The prime factorization of 21787131 is 3 × 71 × 439 × 233. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 3, 24, 40, 176, 824, 9204, 3500, 7651, 84983, 756774, 488115, 192651, 1468379, 22850403, 7019114, 874410053, 788027469, 1584692567, 4481799403

Basic calculations (n = 21787131)

Multiplication

n×y
n×2 43574262
n×3 65361393
n×4 87148524
n×5 108935655

Division

n÷y
n÷2 10893565.5
n÷3 7262377
n÷3 5446782.75
n÷5 4357426.2

Exponentiation

ny
n2 474679077211161
n3 1.0341895238159E+22
n4 2.2532022634204E+29
n5 4.9090812882637E+36

Nth Root

y√n
2√n 4667.6686900422
3√n 279.29726412996
4√n 68.320338772888
5√n 29.352156135945

Divisors of 21787131

1, 3, 71, 213, 233, 439, 699, 1317, 16543, 31169, 49629, 93507, 102287, 306861, 7262377, 21787131

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 -21787130
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 21787131 can be divided by 16 positive divisors. The sum of these divisors (counting 21787131) is 1, the average is 0.0625.

Base conversion 21787131

Base System Value
2 Binary 1010011000111000111111011
3 Ternary 1111222220022210
4 Quaternary 1103013013323
5 Quinary 21034142011
6 Senary 2054550203
8 Octal 123070773
10 Decimal 21787131
12 Duodecimal 7368363
16 Hexadecimal 14c71fb
20 Vigesimal 6g37gb
36 Base36 cyz23

Cryptographic Hash Functions

md5 734f7021840cb65d48e932a0130e47ef
sha1 d0c7daaf066b73a7fc194ba39c79f950be6c7fbe
sha256 132b174dd9a024ee67afdfbc6bbe7ed534835af9dfd52786b4c3529dbf46c6bf
sha512 fd7344c69885abaae70c52d8a3d10bbba798bf69fc274bba6ef2bc4f707fda09635d280a8f83b941c4b87d9844ab9f80c756faf5170d23500ef7c37d3dc50beb
ripemd-160 3df258b22c3c140e8d8cf8ca679cf04b8499b664

21787131 as geometric shapes

Circle

Radius = n
Diameter 43574262
Circumference 136892581.3848
Area 1.4912483017794E+15

Sphere

Radius = n
Volume 4.3320029472526E+22
Surface area 5.9649932071175E+15
Circumference 136892581.3848

Square

Length = n
Perimeter 87148524
Area 474679077211161
Diagonal 30811656.145399

Cube

Length = n
Surface area 2848074463266966
Volume 1.0341895238159E+22
Space diagonal 37736417.843159

Equilateral Triangle

Length = n
Perimeter 65361393
Area 2.0554206975491E+14
Altitude 18868208.921579

Triangular Pyramid

Length = n
Surface area 2.0554206975491E+14
Volume 1.2188040422038E+21
Height 10270552.048466