21485 (number)

21485 is an odd 5-digits composite number following 21484 and preceding 21486. In scientific notation, it is written as 2.1485 × 10^4. The sum of its digits is 20. It has a total of 2 prime factors and 4 positive divisors. There are 17184 positive integers (up to 21485) that are relatively prime to 21485.

Interesting facts

Basic properties

Name

Name twenty-one thousand four hundred eighty-five

Notation

Scientific notation 2.1485 × 10^4
Engineering notation 2.1485 × 10^3

Prime Factorization of 21485

Prime Factorization 5 × 4297

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21485
Product of the distinct prime numbers

The prime factorization of 21485 is 5 × 4297. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 7, 46, 7, 535, 634, 8416, 7347, 74463, 5862, 613343, 446114, 7942158, 8979943, 17735626, 94947706, 15123115, 748901897, 8342053639, 561588191

Basic calculations (n = 21485)

Multiplication

n×y
n×2 42970
n×3 64455
n×4 85940
n×5 107425

Division

n÷y
n÷2 10742.5
n÷3 7161.6666666667
n÷3 5371.25
n÷5 4297

Exponentiation

ny
n2 461605225
n3 9917588259125
n4 213079383747300625
n5 4.5780105598108E+21

Nth Root

y√n
2√n 146.57762448614
3√n 27.800020702847
4√n 12.106924650221
5√n 7.3523652137041

Divisors of 21485

1, 5, 4297, 21485

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 -21484
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 21485 can be divided by 4 positive divisors. The sum of these divisors (counting 21485) is 1, the average is 0.25.

Base conversion 21485

Base System Value
2 Binary 101001111101101
3 Ternary 1002110202
4 Quaternary 11033231
5 Quinary 1141420
6 Senary 243245
8 Octal 51755
10 Decimal 21485
12 Duodecimal 10525
16 Hexadecimal 53ed
20 Vigesimal 2de5
36 Base36 gkt

Cryptographic Hash Functions

md5 5fffe13c978a4c75c212c30e080f6e28
sha1 30427b7ab94d0f002b6d4082f48c9fa89823c92d
sha256 cdad812b212acd1e127f696227143e41c61e96f8f4d475d6003fb659db8fce56
sha512 3666a6b1b0a844a5010a294ca8c40d18a0d0b46a0b58cf65545b1f75ec656aec2e9aa2d0f720665fb03cdbf5e991be735968843d0ee6ae699cc4980883d98afb
ripemd-160 5440873cca12aa79c82f8984a8a8549134ffaa75

21485 as geometric shapes

Circle

Radius = n
Diameter 42970
Circumference 134994.23632475
Area 1450175583.7187

Sphere

Radius = n
Volume 41542696554927
Surface area 5800702334.8747
Circumference 134994.23632475

Square

Length = n
Perimeter 85940
Area 461605225
Diagonal 30384.378387586

Cube

Length = n
Surface area 2769631350
Volume 9917588259125
Space diagonal 37213.111600617

Equilateral Triangle

Length = n
Perimeter 64455
Area 199880925.68482
Altitude 18606.555800309

Triangular Pyramid

Length = n
Surface area 199880925.68482
Volume 1168798985173.9
Height 10128.126129195