21397968 (number)

21397968 is an even 8-digits composite number following 21397967 and preceding 21397969. In scientific notation, it is written as 2.1397968 × 10^7. The sum of its digits is 45. It has a total of 7 prime factors and 40 positive divisors. There are 6712320 positive integers (up to 21397968) that are relatively prime to 21397968.

Interesting facts

Basic properties

Name

Name twenty-one million three hundred ninety-seven thousand nine hundred sixty-eight

Notation

Scientific notation 2.1397968 × 10^7
Engineering notation 2.1397968 × 10^6

Prime Factorization of 21397968

Prime Factorization 2 × 2 × 2 × 2 × 9 × 17 × 8741

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 2674746
Product of the distinct prime numbers

The prime factorization of 21397968 is 2 × 2 × 2 × 2 × 9 × 17 × 8741. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21397968)

Multiplication

n×y
n×2 42795936
n×3 64193904
n×4 85591872
n×5 106989840

Division

n÷y
n÷2 10698984
n÷3 7132656
n÷3 5349492
n÷5 4279593.6

Exponentiation

ny
n2 457873034529024
n3 9.797552540915E+21
n4 2.0964771574882E+29
n5 4.4860351128663E+36

Nth Root

y√n
2√n 4625.7937697221
3√n 277.62432218577
4√n 68.013188204363
5√n 29.246540829428

Divisors of 21397968

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21397967
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21397968 can be divided by 40 positive divisors. The sum of these divisors (counting 21397968) is 1, the average is 0.025.

Base conversion 21397968

Base System Value
2 Binary 1010001101000000111010000
3 Ternary 1111021010111100
4 Quaternary 1101220013100
5 Quinary 20434213333
6 Senary 2042344400
8 Octal 121500720
10 Decimal 21397968
12 Duodecimal 71bb100
16 Hexadecimal 14681d0
20 Vigesimal 6deei8
36 Base36 cqms0

Cryptographic Hash Functions

md5 230b087c0e661133754e7472bb62b874
sha1 bbd518b3bdb618139e5e10c8f2fa14c5a71b13d8
sha256 91191ee29e12bf9c492394491be1417db4b411a04bf88dfec749c72c669b79d3
sha512 e1c64c86e8101d7dccd723f436633af15edfceb484734874804cf89b36da8b17c978355d422702c8adffed79ad60e48955a31a6fedab15e10c8063b529c8a022
ripemd-160 f73618e0e702846fd2269ab66624d27f2fab1cb8

21397968 as geometric shapes

Circle

Radius = n
Diameter 42795936
Circumference 134447398.1411
Area 1.4384505615532E+15

Sphere

Radius = n
Volume 4.1039892114265E+22
Surface area 5.753802246213E+15
Circumference 134447398.1411

Square

Length = n
Perimeter 85591872
Area 457873034529024
Diagonal 30261296.552825

Cube

Length = n
Surface area 2747238207174144
Volume 9.797552540915E+21
Space diagonal 37062367.754733

Equilateral Triangle

Length = n
Perimeter 64193904
Area 1.98264839805E+14
Altitude 18531183.877366

Triangular Pyramid

Length = n
Surface area 1.98264839805E+14
Volume 1.1546526401187E+21
Height 10087098.850942