20991690 (number)

20991690 is an even 8-digits composite number following 20991689 and preceding 20991691. In scientific notation, it is written as 2.0991690 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 5597712 positive integers (up to 20991690) that are relatively prime to 20991690.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0991690 × 10^7
Engineering notation 2.0991690 × 10^6

Prime Factorization of 20991690

Prime Factorization 2 × 9 × 15 × 77747

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20991690
Product of the distinct prime numbers

The prime factorization of 20991690 is 2 × 9 × 15 × 77747. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 7, 19, 42, 329, 576, 7929, 6176, 28221, 99349, 34185, 958519, 3261395, 2058665, 99406680, 62748634, 263102363, 30165899, 5326203863, 6869720749

Basic calculations (n = 20991690)

Multiplication

n×y
n×2 41983380
n×3 62975070
n×4 83966760
n×5 104958450

Division

n÷y
n÷2 10495845
n÷3 6997230
n÷3 5247922.5
n÷5 4198338

Exponentiation

ny
n2 440651049056100
n3 9.2500102199604E+21
n4 1.9417334703424E+29
n5 4.0760267072052E+36

Nth Root

y√n
2√n 4581.6689099061
3√n 275.85602131318
4√n 67.68802634075
5√n 29.13462824042

Divisors of 20991690

1, 2, 9, 15, 18, 30, 135, 270, 77747, 155494, 699723, 1166205, 1399446, 2332410, 10495845, 20991690

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 -20991689
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 20991690 can be divided by 16 positive divisors. The sum of these divisors (counting 20991690) is 1, the average is 0.0625.

Base conversion 20991690

Base System Value
2 Binary 1010000000100111011001010
3 Ternary 1110111111012000
4 Quaternary 1100010323022
5 Quinary 20333213230
6 Senary 2025531430
8 Octal 120047312
10 Decimal 20991690
12 Duodecimal 7043b76
16 Hexadecimal 1404eca
20 Vigesimal 6b3j4a
36 Base36 chxai

Cryptographic Hash Functions

md5 7bc88ac2967b7d24ddfc579fa78d5b9a
sha1 473ce067a05e2ea5f5365e7932e6fe72b3fa3732
sha256 c22cfb95f7f80e63e9341b5c19259ea21c90aae4d36f1f3e80691bb42b875248
sha512 d28ed5b63cd4d80fd4fc73f18087b3c41abec1e664f3026f8029a6bdfce82defb0582e83f0ebff56bd8f9171d3ea504260ef0da148ac0dcb954e5593a5bd318d
ripemd-160 d3ed9f5dde140abca4cb1228dec17fc828b238b3

20991690 as geometric shapes

Circle

Radius = n
Diameter 41983380
Circumference 131894678.18087
Area 1.3843460985113E+15

Sphere

Radius = n
Volume 3.8746352203544E+22
Surface area 5.5373843940451E+15
Circumference 131894678.18087

Square

Length = n
Perimeter 83966760
Area 440651049056100
Diagonal 29686732.695132

Cube

Length = n
Surface area 2643906294336600
Volume 9.2500102199604E+21
Space diagonal 36358673.616736

Equilateral Triangle

Length = n
Perimeter 62975070
Area 1.9080750134342E+14
Altitude 18179336.808368

Triangular Pyramid

Length = n
Surface area 1.9080750134342E+14
Volume 1.0901241587631E+21
Height 9895577.5650439