81129738 (number)

81129738 is an even 8-digits composite number following 81129737 and preceding 81129739. In scientific notation, it is written as 8.1129738 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors. There are 26970000 positive integers (up to 81129738) that are relatively prime to 81129738.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-nine thousand seven hundred thirty-eight

Notation

Scientific notation 8.1129738 × 10^7
Engineering notation 8.1129738 × 10^6

Prime Factorization of 81129738

Prime Factorization 2 × 3 × 373 × 36251

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81129738
Product of the distinct prime numbers

The prime factorization of 81129738 is 2 × 3 × 373 × 36251. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 7, 54, 55, 325, 378, 9634, 236, 26963, 10331, 626634, 655694, 7792019, 8047523, 77049689, 58816173, 780142523, 661441058, 1444060061, 3964881041

Basic calculations (n = 81129738)

Multiplication

n×y
n×2 162259476
n×3 243389214
n×4 324518952
n×5 405648690

Division

n÷y
n÷2 40564869
n÷3 27043246
n÷3 20282434.5
n÷5 16225947.6

Exponentiation

ny
n2 6582034387948644
n3 5.3399872540126E+23
n4 4.3323176684138E+31
n5 3.5147979737119E+39

Nth Root

y√n
2√n 9007.2047828391
3√n 432.90575351549
4√n 94.906294748236
5√n 38.180007968114

Divisors of 81129738

1, 2, 3, 6, 373, 746, 1119, 2238, 36251, 72502, 108753, 217506, 13521623, 27043246, 40564869, 81129738

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 -81129737
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 81129738 can be divided by 16 positive divisors. The sum of these divisors (counting 81129738) is 1, the average is 0.0625.

Base conversion 81129738

Base System Value
2 Binary 100110101011111000100001010
3 Ternary 12122122211002010
4 Quaternary 10311133010022
5 Quinary 131232122423
6 Senary 12014520350
8 Octal 465370412
10 Decimal 81129738
12 Duodecimal 232060b6
16 Hexadecimal 4d5f10a
20 Vigesimal 157146i
36 Base36 1caw3u

Cryptographic Hash Functions

md5 ffc26efa27b87a7b264e936cfe0581c2
sha1 506338ba815ef6369b853947e7043876191147bd
sha256 525093d730cbfd4bd6a3a87d87b6b3a0495ef6e4e465fa2e75886f338daf1ae6
sha512 3ab9be13a7e5c72e6dbb30694446f41169004ae6a806dc38cb0685759355a9631183c7d9846867bea9e0e7d4eafa805b34c0a302af6807fda3a2a1c446963d74
ripemd-160 4cb4a9ad12db3b01e56d8901de4e27617a97d9b2

81129738 as geometric shapes

Circle

Radius = n
Diameter 162259476
Circumference 509753177.77693
Area 2.0678070878855E+16

Sphere

Radius = n
Volume 2.2368086303292E+24
Surface area 8.2712283515419E+16
Circumference 509753177.77693

Square

Length = n
Perimeter 324518952
Area 6582034387948644
Diagonal 114734775.79138

Cube

Length = n
Surface area 39492206327691864
Volume 5.3399872540126E+23
Space diagonal 140520828.22075

Equilateral Triangle

Length = n
Perimeter 243389214
Area 2.8501044942731E+15
Altitude 70260414.110376

Triangular Pyramid

Length = n
Surface area 2.8501044942731E+15
Volume 6.2932353312701E+22
Height 38244925.263792