21081640 (number)

21081640 is an even 8-digits composite number following 21081639 and preceding 21081641. In scientific notation, it is written as 2.1081640 × 10^7. The sum of its digits is 22. It has a total of 6 prime factors and 32 positive divisors. There are 7988544 positive integers (up to 21081640) that are relatively prime to 21081640.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-one thousand six hundred forty

Notation

Scientific notation 2.1081640 × 10^7
Engineering notation 2.1081640 × 10^6

Prime Factorization of 21081640

Prime Factorization 2 × 2 × 2 × 5 × 19 × 27739

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 5270410
Product of the distinct prime numbers

The prime factorization of 21081640 is 2 × 2 × 2 × 5 × 19 × 27739. Since it has a total of 6 prime factors.

Most popular turbo-numbers

1, 9, 5, 3, 672, 582, 550, 420, 19315, 34437, 48089, 566440, 363314, 4177567, 13972379, 39532469, 701762522, 927188278, 7321699222, 5860275979

Basic calculations (n = 21081640)

Multiplication

n×y
n×2 42163280
n×3 63244920
n×4 84326560
n×5 105408200

Division

n÷y
n÷2 10540820
n÷3 7027213.3333333
n÷3 5270410
n÷5 4216328

Exponentiation

ny
n2 444435545089600
n3 9.3694301647827E+21
n4 1.9752295373909E+29
n5 4.1641078024641E+36

Nth Root

y√n
2√n 4591.4747086312
3√n 276.24947687295
4√n 67.760421402403
5√n 29.159554099015

Divisors of 21081640

1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27739, 55478, 110956, 138695, 221912, 277390, 527041, 554780, 1054082, 1109560, 2108164, 2635205, 4216328, 5270410, 10540820, 21081640

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 -21081639
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 21081640 can be divided by 32 positive divisors. The sum of these divisors (counting 21081640) is 1, the average is 0.03125.

Base conversion 21081640

Base System Value
2 Binary 1010000011010111000101000
3 Ternary 1110200001120111
4 Quaternary 1100122320220
5 Quinary 20344103030
6 Senary 2031504104
8 Octal 120327050
10 Decimal 21081640
12 Duodecimal 7088034
16 Hexadecimal 141ae28
20 Vigesimal 6bf420
36 Base36 cjup4

Cryptographic Hash Functions

md5 6fb2dfaa9317ec745f301a0800b0db20
sha1 e7546731e3d4a2876ef54c8f67557971708b94ad
sha256 bf251a3345d84887f50c6757f2ec89e2749b91244ee26b378e0ed5fbe410d675
sha512 265dcafa5bcc4187e12c65e16cf2f46ff74fc9d6148994a8aff57922455e065707851fd1d2ea884b68fabe11c42bcdb272699ae9cfdf4b8e411558c4affb100d
ripemd-160 caed8e3dde22e4da42a21856a406c1f1c0f6fc3f

21081640 as geometric shapes

Circle

Radius = n
Diameter 42163280
Circumference 132459850.69925
Area 1.3962354434477E+15

Sphere

Radius = n
Volume 3.9246577298672E+22
Surface area 5.5849417737906E+15
Circumference 132459850.69925

Square

Length = n
Perimeter 84326560
Area 444435545089600
Diagonal 29813941.205067

Cube

Length = n
Surface area 2666613270537600
Volume 9.3694301647827E+21
Space diagonal 36514471.586876

Equilateral Triangle

Length = n
Perimeter 63244920
Area 1.9244623619619E+14
Altitude 18257235.793438

Triangular Pyramid

Length = n
Surface area 1.9244623619619E+14
Volume 1.1041979342286E+21
Height 9937980.401689