21439 (number)

21439 is an odd 5-digits composite number following 21438 and preceding 21440. In scientific notation, it is written as 2.1439 × 10^4. The sum of its digits is 19. It has a total of 2 prime factors and 4 positive divisors. There are 19480 positive integers (up to 21439) that are relatively prime to 21439.

Interesting facts

Basic properties

Name

Name twenty-one thousand four hundred thirty-nine

Notation

Scientific notation 2.1439 × 10^4
Engineering notation 2.1439 × 10^3

Prime Factorization of 21439

Prime Factorization 11 × 1949

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21439
Product of the distinct prime numbers

The prime factorization of 21439 is 11 × 1949. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 10, 11, 57, 471, 818, 6134, 4318, 33036, 47966, 30544, 165709, 2100008, 973257, 48311596, 62722739, 737532250, 877638299, 2777889373, 3553632125

Basic calculations (n = 21439)

Multiplication

n×y
n×2 42878
n×3 64317
n×4 85756
n×5 107195

Division

n÷y
n÷2 10719.5
n÷3 7146.3333333333
n÷3 5359.75
n÷5 4287.8

Exponentiation

ny
n2 459630721
n3 9854023027519
n4 211260399686979841
n5 4.5292117088892E+21

Nth Root

y√n
2√n 146.42062696219
3√n 27.780166313129
4√n 12.100439122701
5√n 7.3492141890976

Divisors of 21439

1, 11, 1949, 21439

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21438
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21439 can be divided by 4 positive divisors. The sum of these divisors (counting 21439) is 1, the average is 0.25.

Base conversion 21439

Base System Value
2 Binary 101001110111111
3 Ternary 1002102001
4 Quaternary 11032333
5 Quinary 1141224
6 Senary 243131
8 Octal 51677
10 Decimal 21439
12 Duodecimal 104a7
16 Hexadecimal 53bf
20 Vigesimal 2dbj
36 Base36 gjj

Cryptographic Hash Functions

md5 4851be13cf2335c7f889d389d219fb24
sha1 c0f8152088b8c0e2f922ba821bf138a608a1d635
sha256 4772488ceeb1aa68d0e2e3762d32c7ac790fbb3d20024dfafd09c7d7efdfd412
sha512 5b5f07e2555184bf86b9be539c8b5cdb7a7e2ec7511f4b79a61174516718aaa59c6e73d889581d086b8fe79474f983b95b8aecbc6d4537beab54c27bb68a48a6
ripemd-160 749255e2d10a15e7d0da3066760e80d12d8062b0

21439 as geometric shapes

Circle

Radius = n
Diameter 42878
Circumference 134705.20980062
Area 1443972496.4578

Sphere

Radius = n
Volume 41276435135411
Surface area 5775889985.8311
Circumference 134705.20980062

Square

Length = n
Perimeter 85756
Area 459630721
Diagonal 30319.324563717

Cube

Length = n
Surface area 2757784326
Volume 9854023027519
Space diagonal 37133.437263469

Equilateral Triangle

Length = n
Perimeter 64317
Area 199025940.37288
Altitude 18566.718631735

Triangular Pyramid

Length = n
Surface area 199025940.37288
Volume 1161307750787.8
Height 10106.441521239