81749684 (number)

81749684 is an even 8-digits composite number following 81749683 and preceding 81749685. In scientific notation, it is written as 8.1749684 × 10^7. The sum of its digits is 47. It has a total of 4 prime factors and 12 positive divisors. There are 40299000 positive integers (up to 81749684) that are relatively prime to 81749684.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred forty-nine thousand six hundred eighty-four

Notation

Scientific notation 8.1749684 × 10^7
Engineering notation 8.1749684 × 10^6

Prime Factorization of 81749684

Prime Factorization 2 × 2 × 71 × 287851

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40874842
Product of the distinct prime numbers

The prime factorization of 81749684 is 2 × 2 × 71 × 287851. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 1, 69, 4, 825, 354, 6987, 1854, 31745, 53587, 631104, 992411, 6503842, 7721539, 88310385, 82122861, 465079428, 357401209, 3994642229, 1415123664

Basic calculations (n = 81749684)

Multiplication

n×y
n×2 163499368
n×3 245249052
n×4 326998736
n×5 408748420

Division

n÷y
n÷2 40874842
n÷3 27249894.666667
n÷3 20437421
n÷5 16349936.8

Exponentiation

ny
n2 6683010834099856
n3 5.4633402385624E+23
n4 4.4662633808696E+31
n5 3.6511562004686E+39

Nth Root

y√n
2√n 9041.5531851557
3√n 434.0056275683
4√n 95.087082115058
5√n 38.238180288692

Divisors of 81749684

1, 2, 4, 71, 142, 284, 287851, 575702, 1151404, 20437421, 40874842, 81749684

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81749683
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81749684 can be divided by 12 positive divisors. The sum of these divisors (counting 81749684) is 1, the average is 0.083333333333333.

Base conversion 81749684

Base System Value
2 Binary 100110111110110011010110100
3 Ternary 12200211022111002
4 Quaternary 10313312122310
5 Quinary 131411442214
6 Senary 12040102432
8 Octal 467663264
10 Decimal 81749684
12 Duodecimal 23464a18
16 Hexadecimal 4df66b4
20 Vigesimal 15aie44
36 Base36 1co6gk

Cryptographic Hash Functions

md5 420cc995dc7f7b283ca7db90f3df247a
sha1 14f12b465d2d5dcfbacbb29cbb15c4aabd2ff006
sha256 71361e85a823949c4e6305104f872c32b676b76a65321cef810ff977bc9fd35d
sha512 4cb2bb73e6aca7415cf0b2d08739143e8209b91c72840c380398da0ea562328965e98a08d134e302206232ead7329493a08c0d3fc27f9d8a3b0dc8e9e156550b
ripemd-160 f83d8df68968ca2c239e152f37f09198993f60cb

81749684 as geometric shapes

Circle

Radius = n
Diameter 163499368
Circumference 513648413.37537
Area 2.0995297740269E+16

Sphere

Radius = n
Volume 2.2884786076706E+24
Surface area 8.3981190961076E+16
Circumference 513648413.37537

Square

Length = n
Perimeter 326998736
Area 6683010834099856
Diagonal 115611511.83251

Cube

Length = n
Surface area 40098065004599136
Volume 5.4633402385624E+23
Space diagonal 141594606.1907

Equilateral Triangle

Length = n
Perimeter 245249052
Area 2.8938285780486E+15
Altitude 70797303.09535

Triangular Pyramid

Length = n
Surface area 2.8938285780486E+15
Volume 6.4386082176947E+22
Height 38537170.610838