21000815 (number)

21000815 is an odd 8-digits composite number following 21000814 and preceding 21000816. In scientific notation, it is written as 2.1000815 × 10^7. The sum of its digits is 17. It has a total of 5 prime factors and 32 positive divisors. There are 14572800 positive integers (up to 21000815) that are relatively prime to 21000815.

Interesting facts

Basic properties

Name

Name twenty-one million eight hundred fifteen

Notation

Scientific notation 2.1000815 × 10^7
Engineering notation 2.1000815 × 10^6

Prime Factorization of 21000815

Prime Factorization 11 × 139 × 5 × 41 × 67

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 21000815
Product of the distinct prime numbers

The prime factorization of 21000815 is 11 × 139 × 5 × 41 × 67. Since it has a total of 5 prime factors.

Most popular turbo-numbers

9, 1, 59, 94, 654, 39, 3834, 9267, 27932, 71190, 834222, 424367, 2815464, 24481, 18240977, 82712027, 933815058, 724693401, 2303677483, 5617404978

Basic calculations (n = 21000815)

Multiplication

n×y
n×2 42001630
n×3 63002445
n×4 84003260
n×5 105004075

Division

n÷y
n÷2 10500407.5
n÷3 7000271.6666667
n÷3 5250203.75
n÷5 4200163

Exponentiation

ny
n2 441034230664225
n3 9.2620782868467E+21
n4 1.9451119261758E+29
n5 4.0848935715913E+36

Nth Root

y√n
2√n 4582.6646178834
3√n 275.89598667639
4√n 67.695381067569
5√n 29.137160740362

Divisors of 21000815

1, 5, 11, 41, 55, 67, 139, 205, 335, 451, 695, 737, 1529, 2255, 2747, 3685, 5699, 7645, 9313, 13735, 28495, 30217, 46565, 62689, 102443, 151085, 313445, 381833, 512215, 1909165, 4200163, 21000815

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21000814
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21000815 can be divided by 32 positive divisors. The sum of these divisors (counting 21000815) is 1, the average is 0.03125.

Base conversion 21000815

Base System Value
2 Binary 1010000000111001001101111
3 Ternary 1110111221200222
4 Quaternary 1100013021233
5 Quinary 20334011230
6 Senary 2030041555
8 Octal 120071157
10 Decimal 21000815
12 Duodecimal 70492bb
16 Hexadecimal 140726f
20 Vigesimal 6b520f
36 Base36 ci4bz

Cryptographic Hash Functions

md5 7fca871903a26b4c8d89cea288f3d402
sha1 ef5e6746879746557f678496adc0446e3af29b76
sha256 4609ed13b1b88b3e99056a6d9c745aca812be5efc69d7ef9a45bd0d649880e48
sha512 8c4cb82107496c824b3e2e6f11110b12450abb312964db7b72de02919447223c0f82d3860bde126c9ad30321e9b69f05dccf8238fd689833344507f980a55485
ripemd-160 4c2ed68a150d88bd95e10341b3d6a347a634669c

21000815 as geometric shapes

Circle

Radius = n
Diameter 42001630
Circumference 131952012.2468
Area 1.3855498990364E+15

Sphere

Radius = n
Volume 3.8796902803908E+22
Surface area 5.5421995961454E+15
Circumference 131952012.2468

Square

Length = n
Perimeter 84003260
Area 441034230664225
Diagonal 29699637.393888

Cube

Length = n
Surface area 2646205383985350
Volume 9.2620782868467E+21
Space diagonal 36374478.580355

Equilateral Triangle

Length = n
Perimeter 63002445
Area 1.9097342384687E+14
Altitude 18187239.290177

Triangular Pyramid

Length = n
Surface area 1.9097342384687E+14
Volume 1.091546394085E+21
Height 9899879.1312961