21691840 (number)

21691840 is an even 8-digits composite number following 21691839 and preceding 21691841. In scientific notation, it is written as 2.1691840 × 10^7. The sum of its digits is 31. It has a total of 9 prime factors and 56 positive divisors. There are 8506368 positive integers (up to 21691840) that are relatively prime to 21691840.

Interesting facts

Basic properties

Name

Name twenty-one million six hundred ninety-one thousand eight hundred forty

Notation

Scientific notation 2.1691840 × 10^7
Engineering notation 2.1691840 × 10^6

Prime Factorization of 21691840

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 53 × 5 × 1279

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 9
Total number of prime factors
rad Radical 677870
Product of the distinct prime numbers

The prime factorization of 21691840 is 2 × 2 × 2 × 2 × 2 × 2 × 53 × 5 × 1279. Since it has a total of 9 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21691840)

Multiplication

n×y
n×2 43383680
n×3 65075520
n×4 86767360
n×5 108459200

Division

n÷y
n÷2 10845920
n÷3 7230613.3333333
n÷3 5422960
n÷5 4338368

Exponentiation

ny
n2 470535922585600
n3 1.0206789946979E+22
n4 2.2140405444348E+29
n5 4.8026613243393E+36

Nth Root

y√n
2√n 4657.4499460542
3√n 278.88947888415
4√n 68.245512277762
5√n 29.326435424832

Divisors of 21691840

56 divisors

τ Total Divisors 56
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21691839
Sum of the proper positive divisors of n
A Arithmetic Mean 0.017857142857143
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 56
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21691840 can be divided by 56 positive divisors. The sum of these divisors (counting 21691840) is 1, the average is 0.017857142857143.

Base conversion 21691840

Base System Value
2 Binary 1010010101111110111000000
3 Ternary 1111211001121111
4 Quaternary 1102233313000
5 Quinary 21023114330
6 Senary 2052533104
8 Octal 122576700
10 Decimal 21691840
12 Duodecimal 7321194
16 Hexadecimal 14afdc0
20 Vigesimal 6fb9c0
36 Base36 cwxj4

Cryptographic Hash Functions

md5 8ede07bf16a0478f98803b6b1d81dcfe
sha1 2a57ebcb453173b369b33b07c83ba27e4de7ee7f
sha256 9ac2fec3174d6f889a7dd3b66ba77ffcd68c67eb92ded98b42288df8256d494b
sha512 15683967fe20d02569d26439957ff728e479a22e6419bcba2812de2af69bd61cd42f7f6041d06759d529f159903d268390b0edcdf212152e06a1e8c50085b6ce
ripemd-160 603166dbfcfda87773ec7ce4f7fd7b71f108b193

21691840 as geometric shapes

Circle

Radius = n
Diameter 43383680
Circumference 136293850.37369
Area 1.478232197645E+15

Sphere

Radius = n
Volume 4.2754101752219E+22
Surface area 5.9129287905801E+15
Circumference 136293850.37369

Square

Length = n
Perimeter 86767360
Area 470535922585600
Diagonal 30676894.320827

Cube

Length = n
Surface area 2823215535513600
Volume 1.0206789946979E+22
Space diagonal 37571368.989655

Equilateral Triangle

Length = n
Perimeter 65075520
Area 2.0374803117614E+14
Altitude 18785684.494827

Triangular Pyramid

Length = n
Surface area 2.0374803117614E+14
Volume 1.2028817309426E+21
Height 10225631.440276