81189724 (number)

81189724 is an even 8-digits composite number following 81189723 and preceding 81189725. In scientific notation, it is written as 8.1189724 × 10^7. The sum of its digits is 40. It has a total of 7 prime factors and 96 positive divisors. There are 29652480 positive integers (up to 81189724) that are relatively prime to 81189724.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred eighty-nine thousand seven hundred twenty-four

Notation

Scientific notation 8.1189724 × 10^7
Engineering notation 8.1189724 × 10^6

Prime Factorization of 81189724

Prime Factorization 2 × 2 × 7 × 157 × 11 × 23 × 73

Composite number
ω Distinct Factors 6
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 40594862
Product of the distinct prime numbers

The prime factorization of 81189724 is 2 × 2 × 7 × 157 × 11 × 23 × 73. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81189724)

Multiplication

n×y
n×2 162379448
n×3 243569172
n×4 324758896
n×5 405948620

Division

n÷y
n÷2 40594862
n÷3 27063241.333333
n÷3 20297431
n÷5 16237944.8

Exponentiation

ny
n2 6591771283196176
n3 5.3518409115382E+23
n4 4.345144864997E+31
n5 3.5278111232912E+39

Nth Root

y√n
2√n 9010.5340574241
3√n 433.01242170574
4√n 94.923832926321
5√n 38.18565223361

Divisors of 81189724

96 divisors

τ Total Divisors 96
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81189723
Sum of the proper positive divisors of n
A Arithmetic Mean 0.010416666666667
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 96
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81189724 can be divided by 96 positive divisors. The sum of these divisors (counting 81189724) is 1, the average is 0.010416666666667.

Base conversion 81189724

Base System Value
2 Binary 100110101101101101101011100
3 Ternary 12122202212100211
4 Quaternary 10311231231130
5 Quinary 131241032344
6 Senary 12020102204
8 Octal 465555534
10 Decimal 81189724
12 Duodecimal 23234964
16 Hexadecimal 4d6db5c
20 Vigesimal 1578e64
36 Base36 1cc6e4

Cryptographic Hash Functions

md5 d6ba8d5ba4f0c6cc6c7f5deab9fad7a3
sha1 b627384b56c660044689e587b5c25d889e979ebf
sha256 c52ef100bc2e65a81ac3039b9ce79750dcdb1b64965e60d2a1fc29ef2ac61432
sha512 a1a0389109109a4e3bbad2e1c7acbe3285a960115139a5b083f23ac2db04a8a9a65e0fcecc76fd470c2fee9c48843842e1e88fb11554450027f482a27f4e010e
ripemd-160 31dcaeeba5d8ff5543bc98687607c9a2ca774a3c

81189724 as geometric shapes

Circle

Radius = n
Diameter 162379448
Circumference 510130080.93077
Area 2.0708660237433E+16

Sphere

Radius = n
Volume 2.2417738787826E+24
Surface area 8.2834640949733E+16
Circumference 510130080.93077

Square

Length = n
Perimeter 324758896
Area 6591771283196176
Diagonal 114819608.80613

Cube

Length = n
Surface area 39550627699177056
Volume 5.3518409115382E+23
Space diagonal 140624727.02049

Equilateral Triangle

Length = n
Perimeter 243569172
Area 2.8543206935923E+15
Altitude 70312363.510247

Triangular Pyramid

Length = n
Surface area 2.8543206935923E+15
Volume 6.3072050006338E+22
Height 38273202.935376