21491808 (number)

21491808 is an even 8-digits composite number following 21491807 and preceding 21491809. In scientific notation, it is written as 2.1491808 × 10^7. The sum of its digits is 33. It has a total of 8 prime factors and 48 positive divisors. There are 6217728 positive integers (up to 21491808) that are relatively prime to 21491808.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand eight hundred eight

Notation

Scientific notation 2.1491808 × 10^7
Engineering notation 2.1491808 × 10^6

Prime Factorization of 21491808

Prime Factorization 2 × 2 × 2 × 2 × 2 × 3 × 221 × 1013

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 1343238
Product of the distinct prime numbers

The prime factorization of 21491808 is 2 × 2 × 2 × 2 × 2 × 3 × 221 × 1013. Since it has a total of 8 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21491808)

Multiplication

n×y
n×2 42983616
n×3 64475424
n×4 85967232
n×5 107459040

Division

n÷y
n÷2 10745904
n÷3 7163936
n÷3 5372952
n÷5 4298361.6

Exponentiation

ny
n2 461897811108864
n3 9.927019071972E+21
n4 2.1334958790716E+29
n5 4.5852683801798E+36

Nth Root

y√n
2√n 4635.925797508
3√n 278.0295674433
4√n 68.087633220049
5√n 29.272147874613

Divisors of 21491808

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491807
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491808 can be divided by 48 positive divisors. The sum of these divisors (counting 21491808) is 1, the average is 0.020833333333333.

Base conversion 21491808

Base System Value
2 Binary 1010001111111000001100000
3 Ternary 1111102220012220
4 Quaternary 1101333001200
5 Quinary 21000214213
6 Senary 2044351040
8 Octal 121770140
10 Decimal 21491808
12 Duodecimal 7245480
16 Hexadecimal 147f060
20 Vigesimal 6e69a8
36 Base36 csn6o

Cryptographic Hash Functions

md5 2c0d81ce0f3c1f8a06d5d6cd615c8ea9
sha1 7089da9ecbc38cfa8a3ed416abfe3efa52e8ec2b
sha256 23a4bd41fac69b9e49586a486fed4c045383aa6deaa9056fe3078f331232f70e
sha512 0106886484cdb496d8296cee6dd87cb9e8c4df8b85f8c55d9e4764e79783a7ae1c8fe6c8166694bb12aa9b9431811caacc0ff52d386c2dd737fcb85665023c5b
ripemd-160 70765ffe633e7a2e77e55151fc3909549894a906

21491808 as geometric shapes

Circle

Radius = n
Diameter 42983616
Circumference 135037012.25032
Area 1.4510947700888E+15

Sphere

Radius = n
Volume 4.1582200251404E+22
Surface area 5.8043790803553E+15
Circumference 135037012.25032

Square

Length = n
Perimeter 85967232
Area 461897811108864
Diagonal 30394006.353519

Cube

Length = n
Surface area 2771386866653184
Volume 9.927019071972E+21
Space diagonal 37224903.402515

Equilateral Triangle

Length = n
Perimeter 64475424
Area 2.0000761918635E+14
Altitude 18612451.701258

Triangular Pyramid

Length = n
Surface area 2.0000761918635E+14
Volume 1.1699104171266E+21
Height 10131335.451173