21015909 (number)

21015909 is an odd 8-digits composite number following 21015908 and preceding 21015910. In scientific notation, it is written as 2.1015909 × 10^7. The sum of its digits is 27. It has a total of 4 prime factors and 16 positive divisors. There are 13711680 positive integers (up to 21015909) that are relatively prime to 21015909.

Interesting facts

Basic properties

Name

Name twenty-one million fifteen thousand nine hundred nine

Notation

Scientific notation 2.1015909 × 10^7
Engineering notation 2.1015909 × 10^6

Prime Factorization of 21015909

Prime Factorization 3 × 9 × 47 × 16561

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21015909
Product of the distinct prime numbers

The prime factorization of 21015909 is 3 × 9 × 47 × 16561. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 9, 49, 23, 711, 154, 3750, 7587, 53605, 13251, 683264, 428711, 7719712, 4492698, 71012449, 30613590, 822833278, 223784932, 1210842329, 3628548589

Basic calculations (n = 21015909)

Multiplication

n×y
n×2 42031818
n×3 63047727
n×4 84063636
n×5 105079545

Division

n÷y
n÷2 10507954.5
n÷3 7005303
n÷3 5253977.25
n÷5 4203181.8

Exponentiation

ny
n2 441668431096281
n3 9.2820635560922E+21
n4 1.9507100302705E+29
n5 4.0995944481552E+36

Nth Root

y√n
2√n 4584.3111805374
3√n 275.96206945665
4√n 67.707541533698
5√n 29.141347910433

Divisors of 21015909

1, 3, 9, 27, 47, 141, 423, 1269, 16561, 49683, 149049, 447147, 778367, 2335101, 7005303, 21015909

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 -21015908
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 21015909 can be divided by 16 positive divisors. The sum of these divisors (counting 21015909) is 1, the average is 0.0625.

Base conversion 21015909

Base System Value
2 Binary 1010000001010110101100101
3 Ternary 1110112201102000
4 Quaternary 1100022311211
5 Quinary 20340002114
6 Senary 2030235513
8 Octal 120126545
10 Decimal 21015909
12 Duodecimal 7055b99
16 Hexadecimal 140ad65
20 Vigesimal 6b6jf9
36 Base36 cifz9

Cryptographic Hash Functions

md5 59907e363bd40c397c86a4a1ec56ac07
sha1 a943231d47d42606568a589e1ca9d0d5e2ed53ab
sha256 a18b10bd0062ffcc7b25ed271a4c501a7baefd462f06804bbe254770cd92e192
sha512 935bfcb0dff252e089f2eeeec3cbe7677af0d2757b520a97f47d0330662d20c6a6df3f045f9b47fee02b3ea09753bad21d539c150912487928440b59e526fd11
ripemd-160 fa0b8717afd51efec863bd304ccd1a240dbfed7e

21015909 as geometric shapes

Circle

Radius = n
Diameter 42031818
Circumference 132046850.64582
Area 1.3875422984546E+15

Sphere

Radius = n
Volume 3.8880616903964E+22
Surface area 5.5501691938184E+15
Circumference 132046850.64582

Square

Length = n
Perimeter 84063636
Area 441668431096281
Diagonal 29720983.533399

Cube

Length = n
Surface area 2650010586577686
Volume 9.2820635560922E+21
Space diagonal 36400622.155244

Equilateral Triangle

Length = n
Perimeter 63047727
Area 1.912480406895E+14
Altitude 18200311.077622

Triangular Pyramid

Length = n
Surface area 1.912480406895E+14
Volume 1.0939016806529E+21
Height 9906994.5111329