81609972 (number)

81609972 is an even 8-digits composite number following 81609971 and preceding 81609973. In scientific notation, it is written as 8.1609972 × 10^7. The sum of its digits is 42. It has a total of 5 prime factors and 24 positive divisors. There are 27080448 positive integers (up to 81609972) that are relatively prime to 81609972.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred nine thousand nine hundred seventy-two

Notation

Scientific notation 8.1609972 × 10^7
Engineering notation 8.1609972 × 10^6

Prime Factorization of 81609972

Prime Factorization 2 × 2 × 3 × 223 × 30497

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40804986
Product of the distinct prime numbers

The prime factorization of 81609972 is 2 × 2 × 3 × 223 × 30497. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 5, 63, 89, 260, 854, 1613, 6839, 50948, 75035, 605480, 899238, 6187499, 3500044, 21078963, 46629439, 573009356, 506364381, 5811892218, 5836630115

Basic calculations (n = 81609972)

Multiplication

n×y
n×2 163219944
n×3 244829916
n×4 326439888
n×5 408049860

Division

n÷y
n÷2 40804986
n÷3 27203324
n÷3 20402493
n÷5 16321994.4

Exponentiation

ny
n2 6660187529840784
n3 5.4353771782506E+23
n4 4.4358097932647E+31
n5 3.6200631302566E+39

Nth Root

y√n
2√n 9033.8237751242
3√n 433.75824488033
4√n 95.046429575888
5√n 38.225101367288

Divisors of 81609972

1, 2, 3, 4, 6, 12, 223, 446, 669, 892, 1338, 2676, 30497, 60994, 91491, 121988, 182982, 365964, 6800831, 13601662, 20402493, 27203324, 40804986, 81609972

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81609971
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81609972 can be divided by 24 positive divisors. The sum of these divisors (counting 81609972) is 1, the average is 0.041666666666667.

Base conversion 81609972

Base System Value
2 Binary 100110111010100010011110100
3 Ternary 12200120012211120
4 Quaternary 10313110103310
5 Quinary 131343004342
6 Senary 12033103540
8 Octal 467242364
10 Decimal 81609972
12 Duodecimal 233b7bb0
16 Hexadecimal 4dd44f4
20 Vigesimal 15a14ic
36 Base36 1cl6no

Cryptographic Hash Functions

md5 e80bd24ee74f1b8654d69f347b3d62c2
sha1 e421c7bb4d529cc85dac480e09bdbb78a24d058d
sha256 bea3494255aded168b48c04c5e332352da64779070c6e81cd3298eb64b3c1b0c
sha512 3d08c8b3040278ea163afc88783ad140674ca6210c885f46ec5b93db4dc669165ef37c881e6d5836854c027ea01b9a515d3972e649c5599258eccebcaf9e3d1f
ripemd-160 63be713cd668ecf5fb7c188ae626f97d0be4e61f

81609972 as geometric shapes

Circle

Radius = n
Diameter 163219944
Circumference 512770576.98974
Area 2.0923596215278E+16

Sphere

Radius = n
Volume 2.2767654683575E+24
Surface area 8.3694384861113E+16
Circumference 512770576.98974

Square

Length = n
Perimeter 326439888
Area 6660187529840784
Diagonal 115413929.22729

Cube

Length = n
Surface area 39961125179044704
Volume 5.4353771782506E+23
Space diagonal 141352617.90827

Equilateral Triangle

Length = n
Perimeter 244829916
Area 2.8839457974052E+15
Altitude 70676308.954137

Triangular Pyramid

Length = n
Surface area 2.8839457974052E+15
Volume 6.4056534350793E+22
Height 38471309.74243