21285845 (number)

21285845 is an odd 8-digits composite number following 21285844 and preceding 21285846. In scientific notation, it is written as 2.1285845 × 10^7. The sum of its digits is 35. It has a total of 4 prime factors and 16 positive divisors. There are 14497056 positive integers (up to 21285845) that are relatively prime to 21285845.

Interesting facts

Basic properties

Name

Name twenty-one million two hundred eighty-five thousand eight hundred forty-five

Notation

Scientific notation 2.1285845 × 10^7
Engineering notation 2.1285845 × 10^6

Prime Factorization of 21285845

Prime Factorization 35 × 7 × 283 × 307

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21285845
Product of the distinct prime numbers

The prime factorization of 21285845 is 35 × 7 × 283 × 307. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 2, 63, 52, 326, 381, 348, 743, 95591, 6986, 627036, 122296, 8940452, 7416081, 2868324, 55430177, 883181352, 958984647, 5789915382, 7581063707

Basic calculations (n = 21285845)

Multiplication

n×y
n×2 42571690
n×3 63857535
n×4 85143380
n×5 106429225

Division

n÷y
n÷2 10642922.5
n÷3 7095281.6666667
n÷3 5321461.25
n÷5 4257169

Exponentiation

ny
n2 453087197364025
n3 9.644343854575E+21
n4 2.0528800841519E+29
n5 4.3697287274844E+36

Nth Root

y√n
2√n 4613.6585265925
3√n 277.13856578236
4√n 67.923917191167
5√n 29.215826654462

Divisors of 21285845

1, 7, 35, 245, 283, 307, 1981, 2149, 9905, 10745, 69335, 75215, 86881, 608167, 3040835, 21285845

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21285844
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21285845 can be divided by 16 positive divisors. The sum of these divisors (counting 21285845) is 1, the average is 0.0625.

Base conversion 21285845

Base System Value
2 Binary 1010001001100101111010101
3 Ternary 1111001102200122
4 Quaternary 1101030233111
5 Quinary 20422121340
6 Senary 2040121325
8 Octal 121145725
10 Decimal 21285845
12 Duodecimal 7166245
16 Hexadecimal 144cbd5
20 Vigesimal 6d0ec5
36 Base36 co89h

Cryptographic Hash Functions

md5 e89f2d339427bcc6011f3c6d4dfed981
sha1 c490c27649a176ce2abe4bfb85d1e33a53f19621
sha256 a08f0fb9da85dc38e8db3134deea57b42dce7e3eeb7ad3b7d637152913bb3cde
sha512 1c1e5a1cf3a2a6601e48463443bf9cff3cc9f9415ca9f79088fc3a9312d2d37eb086515efe82f9889fb1552ce59712de8e2d5f8716f8014619e842441fd37cf2
ripemd-160 e1ec942febef285ade00295f5a5a93705bd3aa0c

21285845 as geometric shapes

Circle

Radius = n
Diameter 42571690
Circumference 133742908.5549
Area 1.4234154106744E+15

Sphere

Radius = n
Volume 4.0398133069636E+22
Surface area 5.6936616426976E+15
Circumference 133742908.5549

Square

Length = n
Perimeter 85143380
Area 453087197364025
Diagonal 30102730.685572

Cube

Length = n
Surface area 2718523184184150
Volume 9.644343854575E+21
Space diagonal 36868165.022036

Equilateral Triangle

Length = n
Perimeter 63857535
Area 1.9619251152337E+14
Altitude 18434082.511018

Triangular Pyramid

Length = n
Surface area 1.9619251152337E+14
Volume 1.1365968232775E+21
Height 10034243.561857