20991685 (number)

20991685 is an odd 8-digits composite number following 20991684 and preceding 20991686. In scientific notation, it is written as 2.0991685 × 10^7. The sum of its digits is 40. It has a total of 4 prime factors and 16 positive divisors. There are 13178880 positive integers (up to 20991685) that are relatively prime to 20991685.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0991685 × 10^7
Engineering notation 2.0991685 × 10^6

Prime Factorization of 20991685

Prime Factorization 65 × 121 × 17 × 157

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20991685
Product of the distinct prime numbers

The prime factorization of 20991685 is 65 × 121 × 17 × 157. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 2, 97, 19, 426, 25, 3651, 4578, 18030, 59877, 459011, 94217, 1193603, 1512450, 92051038, 53590244, 487270907, 747652467, 5801442506, 4566599617

Basic calculations (n = 20991685)

Multiplication

n×y
n×2 41983370
n×3 62975055
n×4 83966740
n×5 104958425

Division

n÷y
n÷2 10495842.5
n÷3 6997228.3333333
n÷3 5247921.25
n÷5 4198337

Exponentiation

ny
n2 440650839139225
n3 9.2500036101963E+21
n4 1.941731620341E+29
n5 4.0760218528739E+36

Nth Root

y√n
2√n 4581.6683642534
3√n 275.85599941118
4√n 67.688022310106
5√n 29.134626852507

Divisors of 20991685

1, 17, 65, 121, 157, 1105, 2057, 2669, 7865, 10205, 18997, 133705, 173485, 322949, 1234805, 20991685

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 -20991684
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 20991685 can be divided by 16 positive divisors. The sum of these divisors (counting 20991685) is 1, the average is 0.0625.

Base conversion 20991685

Base System Value
2 Binary 1010000000100111011000101
3 Ternary 1110111111011211
4 Quaternary 1100010323011
5 Quinary 20333213220
6 Senary 2025531421
8 Octal 120047305
10 Decimal 20991685
12 Duodecimal 7043b71
16 Hexadecimal 1404ec5
20 Vigesimal 6b3j45
36 Base36 chxad

Cryptographic Hash Functions

md5 e60a7a5ea97676c832eb6ffc7dd218a5
sha1 61d7a3480b7fdf1fe1c975693a882105ffd5ca0f
sha256 431789c50f43d2611fbf4c561130769f94b0faf603ae76e98c6a9cc2a673b58b
sha512 70f7fdbfc52d01c9150a353764890314d13d425ec08007a2ca11c458e89d461e4d6c38c9a853b6905c33b75eaf0ac9d4a7210dc2410e23829ddd05542b4f5466
ripemd-160 2b22eb2a9d28c919ad64f3a002fa257055de07aa

20991685 as geometric shapes

Circle

Radius = n
Diameter 41983370
Circumference 131894646.76494
Area 1.384345439038E+15

Sphere

Radius = n
Volume 3.8746324516629E+22
Surface area 5.5373817561519E+15
Circumference 131894646.76494

Square

Length = n
Perimeter 83966740
Area 440650839139225
Diagonal 29686725.624064

Cube

Length = n
Surface area 2643905034835350
Volume 9.2500036101963E+21
Space diagonal 36358664.956481

Equilateral Triangle

Length = n
Perimeter 62975055
Area 1.9080741044675E+14
Altitude 18179332.478241

Triangular Pyramid

Length = n
Surface area 1.9080741044675E+14
Volume 1.090123379795E+21
Height 9895575.2080213