81306784 (number)

81306784 is an even 8-digits composite number following 81306783 and preceding 81306785. In scientific notation, it is written as 8.1306784 × 10^7. The sum of its digits is 37. It has a total of 8 prime factors and 48 positive divisors. There are 35315712 positive integers (up to 81306784) that are relatively prime to 81306784.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred six thousand seven hundred eighty-four

Notation

Scientific notation 8.1306784 × 10^7
Engineering notation 8.1306784 × 10^6

Prime Factorization of 81306784

Prime Factorization 2 × 2 × 2 × 2 × 2 × 13 × 17 × 11497

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 5081674
Product of the distinct prime numbers

The prime factorization of 81306784 is 2 × 2 × 2 × 2 × 2 × 13 × 17 × 11497. Since it has a total of 8 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81306784)

Multiplication

n×y
n×2 162613568
n×3 243920352
n×4 325227136
n×5 406533920

Division

n÷y
n÷2 40653392
n÷3 27102261.333333
n÷3 20326696
n÷5 16261356.8

Exponentiation

ny
n2 6610793124422656
n3 5.3750232863612E+23
n4 4.3702585733914E+31
n5 3.5533166985088E+39

Nth Root

y√n
2√n 9017.0274481117
3√n 433.22042870501
4√n 94.958029929605
5√n 38.196657165018

Divisors of 81306784

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81306783
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81306784 can be divided by 48 positive divisors. The sum of these divisors (counting 81306784) is 1, the average is 0.020833333333333.

Base conversion 81306784

Base System Value
2 Binary 100110110001010010010100000
3 Ternary 12122222210221101
4 Quaternary 10312022102200
5 Quinary 131303304114
6 Senary 12022404144
8 Octal 466122240
10 Decimal 81306784
12 Duodecimal 23290654
16 Hexadecimal 4d8a4a0
20 Vigesimal 15836j4
36 Base36 1ceops

Cryptographic Hash Functions

md5 b10ed873e239c8862eda3dc429007eab
sha1 fde8a17de403d59e6871450318c8be1ecceefe8f
sha256 20735e289800f1cd910b82f09423cc91c1e0efcdf68e4c808507702d1f554ab1
sha512 5db34851e872a9ff3b03725967f12f7b631454056f6d44866bae96ce8a18621bed9b36b38e96a520a3e8d00ea9db0ef87a604417544b6154b716dd7a21290134
ripemd-160 43bdd87c6daed0e3eef0142d2faf02434d384919

81306784 as geometric shapes

Circle

Radius = n
Diameter 162613568
Circumference 510865590.60282
Area 2.0768419114088E+16

Sphere

Radius = n
Volume 2.2514844892408E+24
Surface area 8.3073676456353E+16
Circumference 510865590.60282

Square

Length = n
Perimeter 325227136
Area 6610793124422656
Diagonal 114985156.64574

Cube

Length = n
Surface area 39664758746535936
Volume 5.3750232863612E+23
Space diagonal 140827480.88803

Equilateral Triangle

Length = n
Perimeter 243920352
Area 2.8625573924568E+15
Altitude 70413740.444014

Triangular Pyramid

Length = n
Surface area 2.8625573924568E+15
Volume 6.3345256913693E+22
Height 38328385.54858