20787681 (number)

20787681 is an odd 8-digits composite number following 20787680 and preceding 20787682. In scientific notation, it is written as 2.0787681 × 10^7. The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors. There are 13830912 positive integers (up to 20787681) that are relatively prime to 20787681.

Interesting facts

Basic properties

Name

Name twenty million seven hundred eighty-seven thousand six hundred eighty-one

Notation

Scientific notation 2.0787681 × 10^7
Engineering notation 2.0787681 × 10^6

Prime Factorization of 20787681

Prime Factorization 3 × 523 × 13249

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 20787681
Product of the distinct prime numbers

The prime factorization of 20787681 is 3 × 523 × 13249. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 6, 86, 91, 314, 416, 7358, 3942, 21975, 59005, 280821, 771846, 5288535, 635885, 11809898, 9475262, 641878832, 892861958, 5481527650, 7767155070

Basic calculations (n = 20787681)

Multiplication

n×y
n×2 41575362
n×3 62363043
n×4 83150724
n×5 103938405

Division

n÷y
n÷2 10393840.5
n÷3 6929227
n÷3 5196920.25
n÷5 4157536.2

Exponentiation

ny
n2 432127681357761
n3 8.9829323913348E+21
n4 1.8673433299563E+29
n5 3.881773746061E+36

Nth Root

y√n
2√n 4559.3509406493
3√n 274.95946950886
4√n 67.522966023786
5√n 29.077777478868

Divisors of 20787681

1, 3, 523, 1569, 13249, 39747, 6929227, 20787681

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20787680
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20787681 can be divided by 8 positive divisors. The sum of these divisors (counting 20787681) is 1, the average is 0.125.

Base conversion 20787681

Base System Value
2 Binary 1001111010011000111100001
3 Ternary 1110010010100010
4 Quaternary 1033103013201
5 Quinary 20310201211
6 Senary 2021315133
8 Octal 117230741
10 Decimal 20787681
12 Duodecimal 6b65aa9
16 Hexadecimal 13d31e1
20 Vigesimal 69i941
36 Base36 cdjvl

Cryptographic Hash Functions

md5 113c02b3388f9b0ee86797b2c4f633ac
sha1 37f39af02a81b700690c25f350eade08c0794300
sha256 2c4ac2c673d1fdc0bab27c307e45dc00908f7c3618608e1b7b1a63d5e8c0fb40
sha512 f79f24f8632838da8ef46414840461f6490423f430a66267050c101f22046b129656945864f30913bf9c7b0e835cde8a12dfa53f34a805853bf93cdb4f5cd023
ripemd-160 98997c1c26dc7510d9e983002fd23175021675d8

20787681 as geometric shapes

Circle

Radius = n
Diameter 41575362
Circumference 130612851.82954
Area 1.3575691491663E+15

Sphere

Radius = n
Volume 3.7627619211082E+22
Surface area 5.4302765966653E+15
Circumference 130612851.82954

Square

Length = n
Perimeter 83150724
Area 432127681357761
Diagonal 29398220.400486

Cube

Length = n
Surface area 2592766088146566
Volume 8.9829323913348E+21
Space diagonal 36005319.663534

Equilateral Triangle

Length = n
Perimeter 62363043
Area 1.8711677486714E+14
Altitude 18002659.831767

Triangular Pyramid

Length = n
Surface area 1.8711677486714E+14
Volume 1.0586487348089E+21
Height 9799406.8001618