20991686 (number)

20991686 is an even 8-digits composite number following 20991685 and preceding 20991687. In scientific notation, it is written as 2.0991686 × 10^7. The sum of its digits is 41. It has a total of 4 prime factors and 16 positive divisors. There are 9873600 positive integers (up to 20991686) that are relatively prime to 20991686.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0991686 × 10^7
Engineering notation 2.0991686 × 10^6

Prime Factorization of 20991686

Prime Factorization 2 × 23 × 61 × 7481

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20991686
Product of the distinct prime numbers

The prime factorization of 20991686 is 2 × 23 × 61 × 7481. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 2, 51, 1, 256, 135, 4102, 1882, 68281, 6699, 959148, 182475, 2503190, 2596927, 54386636, 53446955, 670115772, 137207241, 2528938822, 6784892664

Basic calculations (n = 20991686)

Multiplication

n×y
n×2 41983372
n×3 62975058
n×4 83966744
n×5 104958430

Division

n÷y
n÷2 10495843
n÷3 6997228.6666667
n÷3 5247921.5
n÷5 4198337.2

Exponentiation

ny
n2 440650881122596
n3 9.2500049321489E+21
n4 1.9417319903412E+29
n5 4.0760228237398E+36

Nth Root

y√n
2√n 4581.6684733839
3√n 275.85600379158
4√n 67.688023116235
5√n 29.13462713009

Divisors of 20991686

1, 2, 23, 46, 61, 122, 1403, 2806, 7481, 14962, 172063, 344126, 456341, 912682, 10495843, 20991686

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 -20991685
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 20991686 can be divided by 16 positive divisors. The sum of these divisors (counting 20991686) is 1, the average is 0.0625.

Base conversion 20991686

Base System Value
2 Binary 1010000000100111011000110
3 Ternary 1110111111011212
4 Quaternary 1100010323012
5 Quinary 20333213221
6 Senary 2025531422
8 Octal 120047306
10 Decimal 20991686
12 Duodecimal 7043b72
16 Hexadecimal 1404ec6
20 Vigesimal 6b3j46
36 Base36 chxae

Cryptographic Hash Functions

md5 13e5c0247629c4f2cf8f537f18d56b4a
sha1 275f1022c347159ff529913a6d25297da4edb820
sha256 e6f11c65c43f526f9db65a2f9658ae972a3ddff7d7996b8286fa309e6d34d916
sha512 c0898fda48376ddf6770db3692ca3aa1a3094569719b65a7f6a51104a50c303611c76c3ae20fc15fee00b4464bb877025122819c0dd4467b7686d0a5c4f0b6de
ripemd-160 770577849b527a95a3a312532b9967872e53b658

20991686 as geometric shapes

Circle

Radius = n
Diameter 41983372
Circumference 131894653.04813
Area 1.3843455709326E+15

Sphere

Radius = n
Volume 3.8746330054011E+22
Surface area 5.5373822837305E+15
Circumference 131894653.04813

Square

Length = n
Perimeter 83966744
Area 440650881122596
Diagonal 29686727.038277

Cube

Length = n
Surface area 2643905286735576
Volume 9.2500049321489E+21
Space diagonal 36358666.688532

Equilateral Triangle

Length = n
Perimeter 62975058
Area 1.9080742862608E+14
Altitude 18179333.344266

Triangular Pyramid

Length = n
Surface area 1.9080742862608E+14
Volume 1.0901235355886E+21
Height 9895575.6794258