21388518 (number)

21388518 is an even 8-digits composite number following 21388517 and preceding 21388519. In scientific notation, it is written as 2.1388518 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 7113600 positive integers (up to 21388518) that are relatively prime to 21388518.

Interesting facts

Basic properties

Name

Name twenty-one million three hundred eighty-eight thousand five hundred eighteen

Notation

Scientific notation 2.1388518 × 10^7
Engineering notation 2.1388518 × 10^6

Prime Factorization of 21388518

Prime Factorization 2 × 9 × 571 × 2081

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21388518
Product of the distinct prime numbers

The prime factorization of 21388518 is 2 × 9 × 571 × 2081. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 9, 48, 45, 44, 642, 4979, 4982, 23256, 26401, 263699, 769692, 9769413, 9503185, 13316175, 52460899, 672037223, 621226986, 5360610798, 4855197243

Basic calculations (n = 21388518)

Multiplication

n×y
n×2 42777036
n×3 64165554
n×4 85554072
n×5 106942590

Division

n÷y
n÷2 10694259
n÷3 7129506
n÷3 5347129.5
n÷5 4277703.6

Exponentiation

ny
n2 457468702236324
n3 9.7845775722183E+21
n4 2.0927761352579E+29
n5 4.4761380038933E+36

Nth Root

y√n
2√n 4624.7722106067
3√n 277.5834470249
4√n 68.005677782129
5√n 29.243957138799

Divisors of 21388518

1, 2, 9, 18, 571, 1142, 2081, 4162, 5139, 10278, 18729, 37458, 1188251, 2376502, 10694259, 21388518

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 -21388517
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 21388518 can be divided by 16 positive divisors. The sum of these divisors (counting 21388518) is 1, the average is 0.0625.

Base conversion 21388518

Base System Value
2 Binary 1010001100101110011100110
3 Ternary 1111020122112100
4 Quaternary 1101211303212
5 Quinary 20433413033
6 Senary 2042232530
8 Octal 121456346
10 Decimal 21388518
12 Duodecimal 71b5746
16 Hexadecimal 1465ce6
20 Vigesimal 6ddb5i
36 Base36 cqfhi

Cryptographic Hash Functions

md5 226e6090e8c13a8fa5a4e82e9db412ef
sha1 14e369eb53d2b04c13a93ef39f401fe5a1cfc8d2
sha256 d4ef4f376944a16798473eb5f9ece168e90d342a38de3863c072ffdb117e6c25
sha512 c845077c8f312ef403b6f5b35dae24bedb0d4872789e70f82ce3034ee7b6d5b51a7cceae203cb92df3dca1a216d303f88195f3f946ef56e3642aaecff9013a22
ripemd-160 af0fbec6dfcc16090ab50b800743171347aa30f0

21388518 as geometric shapes

Circle

Radius = n
Diameter 42777036
Circumference 134388022.03995
Area 1.4371803141929E+15

Sphere

Radius = n
Volume 4.098554269248E+22
Surface area 5.7487212567716E+15
Circumference 134388022.03995

Square

Length = n
Perimeter 85554072
Area 457468702236324
Diagonal 30247932.234661

Cube

Length = n
Surface area 2744812213417944
Volume 9.7845775722183E+21
Space diagonal 37045999.874601

Equilateral Triangle

Length = n
Perimeter 64165554
Area 1.9808975878648E+14
Altitude 18522999.937301

Triangular Pyramid

Length = n
Surface area 1.9808975878648E+14
Volume 1.1531235253936E+21
Height 10082644.07822