21991488 (number)

21991488 is an even 8-digits composite number following 21991487 and preceding 21991489. In scientific notation, it is written as 2.1991488 × 10^7. The sum of its digits is 42. It has a total of 9 prime factors and 56 positive divisors. There are 7171584 positive integers (up to 21991488) that are relatively prime to 21991488.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1991488 × 10^7
Engineering notation 2.1991488 × 10^6

Prime Factorization of 21991488

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 3 × 47 × 2437

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 9
Total number of prime factors
rad Radical 687234
Product of the distinct prime numbers

The prime factorization of 21991488 is 2 × 2 × 2 × 2 × 2 × 2 × 3 × 47 × 2437. Since it has a total of 9 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21991488)

Multiplication

n×y
n×2 43982976
n×3 65974464
n×4 87965952
n×5 109957440

Division

n÷y
n÷2 10995744
n÷3 7330496
n÷3 5497872
n÷5 4398297.6

Exponentiation

ny
n2 483625544454144
n3 1.0635645357357E+22
n4 2.3389366724857E+29
n5 5.1436697765729E+36

Nth Root

y√n
2√n 4689.508289789
3√n 280.16779058752
4√n 68.4799845925
5√n 29.407013651616

Divisors of 21991488

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 -21991487
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 21991488 can be divided by 56 positive divisors. The sum of these divisors (counting 21991488) is 1, the average is 0.017857142857143.

Base conversion 21991488

Base System Value
2 Binary 1010011111001000001000000
3 Ternary 1112101021122120
4 Quaternary 1103321001000
5 Quinary 21112211423
6 Senary 2103204240
8 Octal 123710100
10 Decimal 21991488
12 Duodecimal 7446680
16 Hexadecimal 14f9040
20 Vigesimal 6h8ie8
36 Base36 d3cqo

Cryptographic Hash Functions

md5 7898efd02d310f16b978be45c0a63830
sha1 959ea77b4f624e5d248698b04c7dff0c87ea5094
sha256 59628bf347bdb76a2b143a1679324e0acec6b350d0b30e6e15aa5eb4ab0b95bf
sha512 2972df279c3cfdd2207160ab0079f6aa2de1f22d87ef6f8b50b8989a68829dedeee7fe906bf62d31dd085001024bc08078930d08d9ff6af5e9806613184d4851
ripemd-160 e94bdd549e2d0980790dfed1aa15b89591d29aa6

21991488 as geometric shapes

Circle

Radius = n
Diameter 43982976
Circumference 138176594.28462
Area 1.5193544575455E+15

Sphere

Radius = n
Volume 4.4550487094478E+22
Surface area 6.077417830182E+15
Circumference 138176594.28462

Square

Length = n
Perimeter 87965952
Area 483625544454144
Diagonal 31100660.586365

Cube

Length = n
Surface area 2901753266724864
Volume 1.0635645357357E+22
Space diagonal 38090374.550041

Equilateral Triangle

Length = n
Perimeter 65974464
Area 2.0941600370818E+14
Altitude 19045187.275021

Triangular Pyramid

Length = n
Surface area 2.0941600370818E+14
Volume 1.253422825747E+21
Height 10366886.862122