21490985 (number)

21490985 is an odd 8-digits composite number following 21490984 and preceding 21490986. In scientific notation, it is written as 2.1490985 × 10^7. The sum of its digits is 38. It has a total of 4 prime factors and 16 positive divisors. There are 16652736 positive integers (up to 21490985) that are relatively prime to 21490985.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety thousand nine hundred eighty-five

Notation

Scientific notation 2.1490985 × 10^7
Engineering notation 2.1490985 × 10^6

Prime Factorization of 21490985

Prime Factorization 5 × 47 × 109 × 839

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21490985
Product of the distinct prime numbers

The prime factorization of 21490985 is 5 × 47 × 109 × 839. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 3, 82, 66, 379, 540, 208, 1228, 95211, 52403, 817610, 865385, 1786917, 1813876, 56923367, 85645577, 198686391, 66267921, 7958629286, 2510434408

Basic calculations (n = 21490985)

Multiplication

n×y
n×2 42981970
n×3 64472955
n×4 85963940
n×5 107454925

Division

n÷y
n÷2 10745492.5
n÷3 7163661.6666667
n÷3 5372746.25
n÷5 4298197

Exponentiation

ny
n2 461862436270225
n3 9.9258786899469E+21
n4 2.1331691003747E+29
n5 4.5843905138616E+36

Nth Root

y√n
2√n 4635.8370333738
3√n 278.0260184747
4√n 68.08698137951
5√n 29.27192368364

Divisors of 21490985

1, 5, 47, 109, 235, 545, 839, 4195, 5123, 25615, 39433, 91451, 197165, 457255, 4298197, 21490985

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 -21490984
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 21490985 can be divided by 16 positive divisors. The sum of these divisors (counting 21490985) is 1, the average is 0.0625.

Base conversion 21490985

Base System Value
2 Binary 1010001111110110100101001
3 Ternary 1111102212002102
4 Quaternary 1101332310221
5 Quinary 21000202420
6 Senary 2044343145
8 Octal 121766451
10 Decimal 21490985
12 Duodecimal 7244ab5
16 Hexadecimal 147ed29
20 Vigesimal 6e6795
36 Base36 csmjt

Cryptographic Hash Functions

md5 1ead843980635400282249b27a6dc6bf
sha1 4dd62ebc55f351a231211c60a5c0a23d8bd4f510
sha256 0f61d9aaed20c60ea672d06c971bf22169012019dfd185fe4a2e7c781796d079
sha512 dba07d0c7c22d1f686c50fb52672ff7639f0ca38b2f1227365870fa7a87b375de5ba8637f5b7fe340b4a9c09c617ef3f2b6df99b10cd9b5f9493903c494bda85
ripemd-160 2d1eb55bd4e1d744e9d2b5b424cd9783102127b6

21490985 as geometric shapes

Circle

Radius = n
Diameter 42981970
Circumference 135031841.18882
Area 1.4509836367556E+15

Sphere

Radius = n
Volume 4.1577423430347E+22
Surface area 5.8039345470225E+15
Circumference 135031841.18882

Square

Length = n
Perimeter 85963940
Area 461862436270225
Diagonal 30392842.455757

Cube

Length = n
Surface area 2771174617621350
Volume 9.9258786899469E+21
Space diagonal 37223477.924701

Equilateral Triangle

Length = n
Perimeter 64472955
Area 1.9999230143189E+14
Altitude 18611738.96235

Triangular Pyramid

Length = n
Surface area 1.9999230143189E+14
Volume 1.1697760218161E+21
Height 10130947.485252