21005812 (number)

21005812 is an even 8-digits composite number following 21005811 and preceding 21005813. In scientific notation, it is written as 2.1005812 × 10^7. The sum of its digits is 19. It has a total of 5 prime factors and 24 positive divisors. There are 9789312 positive integers (up to 21005812) that are relatively prime to 21005812.

Interesting facts

Basic properties

Name

Name twenty-one million five thousand eight hundred twelve

Notation

Scientific notation 2.1005812 × 10^7
Engineering notation 2.1005812 × 10^6

Prime Factorization of 21005812

Prime Factorization 2 × 2 × 17 × 107 × 2887

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 10502906
Product of the distinct prime numbers

The prime factorization of 21005812 is 2 × 2 × 17 × 107 × 2887. Since it has a total of 5 prime factors.

Most popular turbo-numbers

6, 1, 10, 40, 588, 717, 633, 4423, 56324, 95935, 309912, 53315, 3686587, 9507865, 97562331, 3272307, 789806646, 204857087, 7763259876, 4325950674

Basic calculations (n = 21005812)

Multiplication

n×y
n×2 42011624
n×3 63017436
n×4 84023248
n×5 105029060

Division

n÷y
n÷2 10502906
n÷3 7001937.3333333
n÷3 5251453
n÷5 4201162.4

Exponentiation

ny
n2 441244137779344
n3 9.268691404295E+21
n4 1.9469638912464E+29
n5 4.089755747031E+36

Nth Root

y√n
2√n 4583.2097922744
3√n 275.91786746075
4√n 67.699407621296
5√n 29.13854720595

Divisors of 21005812

1, 2, 4, 17, 34, 68, 107, 214, 428, 1819, 2887, 3638, 5774, 7276, 11548, 49079, 98158, 196316, 308909, 617818, 1235636, 5251453, 10502906, 21005812

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 -21005811
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 21005812 can be divided by 24 positive divisors. The sum of these divisors (counting 21005812) is 1, the average is 0.041666666666667.

Base conversion 21005812

Base System Value
2 Binary 1010000001000010111110100
3 Ternary 1110112012120001
4 Quaternary 1100020113310
5 Quinary 20334141222
6 Senary 2030121044
8 Octal 120102764
10 Decimal 21005812
12 Duodecimal 7050184
16 Hexadecimal 14085f4
20 Vigesimal 6b5eac
36 Base36 ci86s

Cryptographic Hash Functions

md5 63d9287b948d690e409d0fbcd7b4c1db
sha1 2e9eb761a81c4de3ca6c996f3c40ded19025992b
sha256 ff3293026c5f42e964626996bac6833856d96c2472963ee36188f532c0dad95b
sha512 3e8cf77cc8d92628a438ddc696f4bf22287e833fa559be22bf66c2a6066b7a91b0a7792869624d62a09a4b34c4f2791f0852898f9e345dc57728fd082283587e
ripemd-160 fb5084dda33b4ddd7946c366172a2cfdffed8c59

21005812 as geometric shapes

Circle

Radius = n
Diameter 42011624
Circumference 131983409.32378
Area 1.3862093416871E+15

Sphere

Radius = n
Volume 3.8824603765499E+22
Surface area 5.5448373667486E+15
Circumference 131983409.32378

Square

Length = n
Perimeter 84023248
Area 441244137779344
Diagonal 29706704.21906

Cube

Length = n
Surface area 2647464826676064
Volume 9.268691404295E+21
Space diagonal 36383133.63824

Equilateral Triangle

Length = n
Perimeter 63017436
Area 1.9106431629394E+14
Altitude 18191566.81912

Triangular Pyramid

Length = n
Surface area 1.9106431629394E+14
Volume 1.0923257574504E+21
Height 9902234.7396865