20405987 (number)

20405987 is an odd 8-digits composite number following 20405986 and preceding 20405988. In scientific notation, it is written as 2.0405987 × 10^7. The sum of its digits is 35. It has a total of 4 prime factors and 16 positive divisors. There are 16865280 positive integers (up to 20405987) that are relatively prime to 20405987.

Interesting facts

Basic properties

Name

Name twenty million four hundred five thousand nine hundred eighty-seven

Notation

Scientific notation 2.0405987 × 10^7
Engineering notation 2.0405987 × 10^6

Prime Factorization of 20405987

Prime Factorization 7 × 41 × 97 × 733

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20405987
Product of the distinct prime numbers

The prime factorization of 20405987 is 7 × 41 × 97 × 733. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 2, 27, 17, 545, 989, 5315, 7882, 90676, 87362, 545043, 916149, 1118540, 2853160, 92845136, 28152982, 292990269, 915830591, 4323820821, 2216147151

Basic calculations (n = 20405987)

Multiplication

n×y
n×2 40811974
n×3 61217961
n×4 81623948
n×5 102029935

Division

n÷y
n÷2 10202993.5
n÷3 6801995.6666667
n÷3 5101496.75
n÷5 4081197.4

Exponentiation

ny
n2 416404305444169
n3 8.4971408436377E+21
n4 1.7339254559244E+29
n5 3.5382460312563E+36

Nth Root

y√n
2√n 4517.2986396739
3√n 273.26616913444
4√n 67.210852097514
5√n 28.970201847691

Divisors of 20405987

1, 7, 41, 97, 287, 679, 733, 3977, 5131, 27839, 30053, 71101, 210371, 497707, 2915141, 20405987

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 -20405986
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 20405987 can be divided by 16 positive divisors. The sum of these divisors (counting 20405987) is 1, the average is 0.0625.

Base conversion 20405987

Base System Value
2 Binary 1001101110101111011100011
3 Ternary 1102101201202022
4 Quaternary 1031311323203
5 Quinary 20210442422
6 Senary 2005212055
8 Octal 115657343
10 Decimal 20405987
12 Duodecimal 6a0102b
16 Hexadecimal 1375ee3
20 Vigesimal 67aej7
36 Base36 c5dcz

Cryptographic Hash Functions

md5 e36027c3bde39089f93b5df328d32c41
sha1 d22b58aaf0d5bf354d95842683577669b8cff259
sha256 33308a687bdac16d32c7608d0e72a4e90ce896e89a75147ad7129dd68821c56e
sha512 a1b34251b83d51ab65abc76f3d084370e789c9f0a1be0205288697690917a7e1445594170d4c50cfbb2d6674d4cb7aa0fd09607af17432e4b55ec1f40febb61c
ripemd-160 4349ad0f3f08e6d273e4e3d165060b084bb603be

20405987 as geometric shapes

Circle

Radius = n
Diameter 40811974
Circumference 128214597.6969
Area 1.3081727069066E+15

Sphere

Radius = n
Volume 3.559274033452E+22
Surface area 5.2326908276262E+15
Circumference 128214597.6969

Square

Length = n
Perimeter 81623948
Area 416404305444169
Diagonal 28858423.569009

Cube

Length = n
Surface area 2498425832665014
Volume 8.4971408436377E+21
Space diagonal 35344206.26259

Equilateral Triangle

Length = n
Perimeter 61217961
Area 1.8030835337993E+14
Altitude 17672103.131295

Triangular Pyramid

Length = n
Surface area 1.8030835337993E+14
Volume 1.0013976518722E+21
Height 9619474.523003