21491888 (number)

21491888 is an even 8-digits composite number following 21491887 and preceding 21491889. In scientific notation, it is written as 2.1491888 × 10^7. The sum of its digits is 41. It has a total of 7 prime factors and 40 positive divisors. There are 9253440 positive integers (up to 21491888) that are relatively prime to 21491888.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1491888 × 10^7
Engineering notation 2.1491888 × 10^6

Prime Factorization of 21491888

Prime Factorization 2 × 2 × 2 × 2 × 19 × 11 × 6427

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 2686486
Product of the distinct prime numbers

The prime factorization of 21491888 is 2 × 2 × 2 × 2 × 19 × 11 × 6427. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21491888)

Multiplication

n×y
n×2 42983776
n×3 64475664
n×4 85967552
n×5 107459440

Division

n÷y
n÷2 10745944
n÷3 7163962.6666667
n÷3 5372972
n÷5 4298377.6

Exponentiation

ny
n2 461901249804544
n3 9.9271299278593E+21
n4 2.13352764571E+29
n5 4.5853537206503E+36

Nth Root

y√n
2√n 4635.9344257657
3√n 278.02991241719
4√n 68.087696581436
5√n 29.272169666807

Divisors of 21491888

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 -21491887
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 21491888 can be divided by 40 positive divisors. The sum of these divisors (counting 21491888) is 1, the average is 0.025.

Base conversion 21491888

Base System Value
2 Binary 1010001111111000010110000
3 Ternary 1111102220022212
4 Quaternary 1101333002300
5 Quinary 21000220023
6 Senary 2044351252
8 Octal 121770260
10 Decimal 21491888
12 Duodecimal 7245528
16 Hexadecimal 147f0b0
20 Vigesimal 6e69e8
36 Base36 csn8w

Cryptographic Hash Functions

md5 bacee7c524a38ae5bdde21f5091ecbae
sha1 71720328a8f935373d05290e79c6638624804fd9
sha256 0f346f29bbe49c4843a54d924717df3503ff99510f43bb7d7c5ea7aaab6aa2e9
sha512 9d1a7f1c7b6e7b32b8d706580a1a7ce3f60d966820725b0743eb7e9463a12f03b460f0c7b05611c0479da58209ca1b96baa25968144851b8e656a2b3f570fff4
ripemd-160 07e3925e9bdd3331ec1cc4615f1765963f90e0cb

21491888 as geometric shapes

Circle

Radius = n
Diameter 42983776
Circumference 135037514.90515
Area 1.4511055730699E+15

Sphere

Radius = n
Volume 4.1582664603459E+22
Surface area 5.8044222922796E+15
Circumference 135037514.90515

Square

Length = n
Perimeter 85967552
Area 461901249804544
Diagonal 30394119.490604

Cube

Length = n
Surface area 2771407498827264
Volume 9.9271299278593E+21
Space diagonal 37225041.96658

Equilateral Triangle

Length = n
Perimeter 64475664
Area 2.0000910818526E+14
Altitude 18612520.98329

Triangular Pyramid

Length = n
Surface area 2.0000910818526E+14
Volume 1.1699234816182E+21
Height 10131373.163535