21000287 (number)

21000287 is an odd 8-digits composite number following 21000286 and preceding 21000288. In scientific notation, it is written as 2.1000287 × 10^7. The sum of its digits is 20. It has a total of 4 prime factors and 16 positive divisors. There are 15091200 positive integers (up to 21000287) that are relatively prime to 21000287.

Interesting facts

Basic properties

Name

Name twenty-one million two hundred eighty-seven

Notation

Scientific notation 2.1000287 × 10^7
Engineering notation 2.1000287 × 10^6

Prime Factorization of 21000287

Prime Factorization 77 × 61 × 17 × 263

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21000287
Product of the distinct prime numbers

The prime factorization of 21000287 is 77 × 61 × 17 × 263. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 4, 44, 53, 475, 964, 5554, 69, 1307, 77753, 345419, 225114, 169037, 1719032, 65747537, 13182908, 538764669, 143263195, 3386554844, 4129321061

Basic calculations (n = 21000287)

Multiplication

n×y
n×2 42000574
n×3 63000861
n×4 84001148
n×5 105001435

Division

n÷y
n÷2 10500143.5
n÷3 7000095.6666667
n÷3 5250071.75
n÷5 4200057.4

Exponentiation

ny
n2 441012054082369
n3 9.2613797061893E+21
n4 1.9449163184595E+29
n5 4.0843800878633E+36

Nth Root

y√n
2√n 4582.6070091161
3√n 275.89367447562
4√n 67.694955566247
5√n 29.137014226281

Divisors of 21000287

1, 17, 61, 77, 263, 1037, 1309, 4471, 4697, 16043, 20251, 79849, 272731, 344267, 1235311, 21000287

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 -21000286
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 21000287 can be divided by 16 positive divisors. The sum of these divisors (counting 21000287) is 1, the average is 0.0625.

Base conversion 21000287

Base System Value
2 Binary 1010000000111000001011111
3 Ternary 1110111220222102
4 Quaternary 1100013001133
5 Quinary 20334002122
6 Senary 2030035315
8 Octal 120070137
10 Decimal 21000287
12 Duodecimal 7048b3b
16 Hexadecimal 140705f
20 Vigesimal 6b50e7
36 Base36 ci3xb

Cryptographic Hash Functions

md5 4930d32916f6e1e4496598e69efdcd31
sha1 04c817f3a140ed469030a1e172e5ffe830038c54
sha256 8a64959b3dc3b5dd5e5d546d7cb90321dc10bcabe7733bd8f91722ad9b8657da
sha512 84a6dc626398204e24496b716767e778cd7d280200ceec7df4e463a4de2bad4d75cebc96fc21a4a96c621aa4ff97c7c72e3ebf492ad95491e8ae5eca38627037
ripemd-160 40ab6b5c7c0f4b8f12a3c0f4731b8deb3e5c8fda

21000287 as geometric shapes

Circle

Radius = n
Diameter 42000574
Circumference 131948694.72495
Area 1.3854802292497E+15

Sphere

Radius = n
Volume 3.8793976596093E+22
Surface area 5.5419209169989E+15
Circumference 131948694.72495

Square

Length = n
Perimeter 84001148
Area 441012054082369
Diagonal 29698890.689127

Cube

Length = n
Surface area 2646072324494214
Volume 9.2613797061893E+21
Space diagonal 36373564.057528

Equilateral Triangle

Length = n
Perimeter 63000861
Area 1.9096382110524E+14
Altitude 18186782.028764

Triangular Pyramid

Length = n
Surface area 1.9096382110524E+14
Volume 1.091464065565E+21
Height 9899630.2297091