21491439 (number)

21491439 is an odd 8-digits composite number following 21491438 and preceding 21491440. In scientific notation, it is written as 2.1491439 × 10^7. The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors. There are 14154840 positive integers (up to 21491439) that are relatively prime to 21491439.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand four hundred thirty-nine

Notation

Scientific notation 2.1491439 × 10^7
Engineering notation 2.1491439 × 10^6

Prime Factorization of 21491439

Prime Factorization 3 × 83 × 86311

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21491439
Product of the distinct prime numbers

The prime factorization of 21491439 is 3 × 83 × 86311. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 1, 92, 57, 875, 489, 9571, 4051, 45573, 62043, 651920, 592694, 4726281, 6610605, 18241504, 3607540, 622341681, 173589127, 1402627169, 7383951312

Basic calculations (n = 21491439)

Multiplication

n×y
n×2 42982878
n×3 64474317
n×4 85965756
n×5 107457195

Division

n÷y
n÷2 10745719.5
n÷3 7163813
n÷3 5372859.75
n÷5 4298287.8

Exponentiation

ny
n2 461881950290721
n3 9.9265077598741E+21
n4 2.1333493600436E+29
n5 4.5848747637066E+36

Nth Root

y√n
2√n 4635.8859994612
3√n 278.02797624015
4√n 68.087340963362
5√n 29.272047357274

Divisors of 21491439

1, 3, 83, 249, 86311, 258933, 7163813, 21491439

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491438
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491439 can be divided by 8 positive divisors. The sum of these divisors (counting 21491439) is 1, the average is 0.125.

Base conversion 21491439

Base System Value
2 Binary 1010001111110111011101111
3 Ternary 1111102212201020
4 Quaternary 1101332323233
5 Quinary 21000211224
6 Senary 2044345223
8 Octal 121767357
10 Decimal 21491439
12 Duodecimal 7245213
16 Hexadecimal 147eeef
20 Vigesimal 6e68bj
36 Base36 csmwf

Cryptographic Hash Functions

md5 e2211886044c8752934ca15b6d477368
sha1 cb1cbb29983055a31391ee3df209fa68f048a054
sha256 03747b316b5455bcc8a67948d378b05f28384a43a749b432323a14ac1d217920
sha512 321427c93c95525bae6487c419993385ccfee8ae41d6d99b3fdf6c0c8e655c636161c5b3fad0ab9b87a07a4332b4890f3231371480c150235bc2dd81655fb99c
ripemd-160 fe41401bfd0593a3dbe864ff21eae079006c9249

21491439 as geometric shapes

Circle

Radius = n
Diameter 42982878
Circumference 135034693.75495
Area 1.4510449418591E+15

Sphere

Radius = n
Volume 4.1580058472297E+22
Surface area 5.8041797674362E+15
Circumference 135034693.75495

Square

Length = n
Perimeter 85965756
Area 461881950290721
Diagonal 30393484.508714

Cube

Length = n
Surface area 2771291701744326
Volume 9.9265077598741E+21
Space diagonal 37224264.275767

Equilateral Triangle

Length = n
Perimeter 64474317
Area 2.0000075125063E+14
Altitude 18612132.137884

Triangular Pyramid

Length = n
Surface area 2.0000075125063E+14
Volume 1.169850158418E+21
Height 10131161.502905