81581799 (number)

81581799 is an odd 8-digits composite number following 81581798 and preceding 81581800. In scientific notation, it is written as 8.1581799 × 10^7. The sum of its digits is 48. It has a total of 4 prime factors and 16 positive divisors. There are 49566816 positive integers (up to 81581799) that are relatively prime to 81581799.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred eighty-one thousand seven hundred ninety-nine

Notation

Scientific notation 8.1581799 × 10^7
Engineering notation 8.1581799 × 10^6

Prime Factorization of 81581799

Prime Factorization 3 × 13 × 79 × 26479

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81581799
Product of the distinct prime numbers

The prime factorization of 81581799 is 3 × 13 × 79 × 26479. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 4, 87, 79, 896, 439, 2617, 8235, 52209, 4505, 819741, 676897, 7344776, 262180, 19277014, 16654908, 116891469, 797158233, 6934053997, 3443462564

Basic calculations (n = 81581799)

Multiplication

n×y
n×2 163163598
n×3 244745397
n×4 326327196
n×5 407908995

Division

n÷y
n÷2 40790899.5
n÷3 27193933
n÷3 20395449.75
n÷5 16316359.8

Exponentiation

ny
n2 6655589928076401
n3 5.4297499973875E+23
n4 4.4296877290712E+31
n5 3.6138189394585E+39

Nth Root

y√n
2√n 9032.2643340416
3√n 433.7083258275
4√n 95.038225646534
5√n 38.222461825839

Divisors of 81581799

1, 3, 13, 39, 79, 237, 1027, 3081, 26479, 79437, 344227, 1032681, 2091841, 6275523, 27193933, 81581799

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 -81581798
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 81581799 can be divided by 16 positive divisors. The sum of these divisors (counting 81581799) is 1, the average is 0.0625.

Base conversion 81581799

Base System Value
2 Binary 100110111001101011011100111
3 Ternary 12200111210012010
4 Quaternary 10313031123213
5 Quinary 131341104144
6 Senary 12032325303
8 Octal 467153347
10 Decimal 81581799
12 Duodecimal 233a3833
16 Hexadecimal 4dcd6e7
20 Vigesimal 159he9j
36 Base36 1ckkx3

Cryptographic Hash Functions

md5 73c8c0b5eed7d2361eb2e552c68b0371
sha1 5463f78b3bca7510af481816f5f3521c74b05a18
sha256 bd851d31dc80b79459d3c3a4bfebba8eb803bf475f578ac08dd1947989bb22cb
sha512 ce99a3694e8dcf691be0f3de2e0b23dcbd31cf5c1923b1d44e6535fe0f5bcf63e3089114afb1f409cf6e98e54408105dc6d9eaf13dcbd17b0d7573b3923142c0
ripemd-160 7a73511adfe93d26fc6330c2582819366222e10c

81581799 as geometric shapes

Circle

Radius = n
Diameter 163163598
Circumference 512593560.81008
Area 2.0909152423351E+16

Sphere

Radius = n
Volume 2.2744083603496E+24
Surface area 8.3636609693404E+16
Circumference 512593560.81008

Square

Length = n
Perimeter 326327196
Area 6655589928076401
Diagonal 115374086.5886

Cube

Length = n
Surface area 39933539568458406
Volume 5.4297499973875E+23
Space diagonal 141303820.84087

Equilateral Triangle

Length = n
Perimeter 244745397
Area 2.881954977443E+15
Altitude 70651910.420436

Triangular Pyramid

Length = n
Surface area 2.881954977443E+15
Volume 6.3990217388339E+22
Height 38458028.862865