81679428 (number)

81679428 is an even 8-digits composite number following 81679427 and preceding 81679429. In scientific notation, it is written as 8.1679428 × 10^7. The sum of its digits is 45. It has a total of 7 prime factors and 60 positive divisors. There are 26284608 positive integers (up to 81679428) that are relatively prime to 81679428.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred seventy-nine thousand four hundred twenty-eight

Notation

Scientific notation 8.1679428 × 10^7
Engineering notation 8.1679428 × 10^6

Prime Factorization of 81679428

Prime Factorization 2 × 2 × 9 × 3 × 3 × 29 × 8693

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 13613238
Product of the distinct prime numbers

The prime factorization of 81679428 is 2 × 2 × 9 × 3 × 3 × 29 × 8693. Since it has a total of 7 prime factors.

Most popular turbo-numbers

8, 10, 30, 53, 722, 534, 2701, 7290, 62874, 81412, 420647, 184543, 1512369, 1456031, 9538501, 48186326, 188198466, 253355497, 3105128700, 3729282890

Basic calculations (n = 81679428)

Multiplication

n×y
n×2 163358856
n×3 245038284
n×4 326717712
n×5 408397140

Division

n÷y
n÷2 40839714
n÷3 27226476
n÷3 20419857
n÷5 16335885.6

Exponentiation

ny
n2 6671528958407184
n3 5.4492666920813E+23
n4 4.4509298642866E+31
n5 3.6354940538304E+39

Nth Root

y√n
2√n 9037.667176877
3√n 433.88126322058
4√n 95.06664597469
5√n 38.231605619674

Divisors of 81679428

1, 2, 3, 4, 6, 9, 12, 18, 27, 29, 36, 54, 58, 81, 87, 108, 116, 162, 174, 261, 324, 348, 522, 783, 1044, 1566, 2349, 3132, 4698, 8693, 9396, 17386, 26079, 34772, 52158, 78237, 104316, 156474, 234711, 252097, 312948, 469422, 504194, 704133, 756291, 938844, 1008388, 1408266, 1512582, 2268873, 2816532, 3025164, 4537746, 6806619, 9075492, 13613238, 20419857, 27226476, 40839714, 81679428

60 divisors

τ Total Divisors 60
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81679427
Sum of the proper positive divisors of n
A Arithmetic Mean 0.016666666666667
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 60
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81679428 can be divided by 60 positive divisors. The sum of these divisors (counting 81679428) is 1, the average is 0.016666666666667.

Base conversion 81679428

Base System Value
2 Binary 100110111100101010001000100
3 Ternary 12200200202010000
4 Quaternary 10313211101010
5 Quinary 131402220203
6 Senary 12034401300
8 Octal 467452104
10 Decimal 81679428
12 Duodecimal 23430230
16 Hexadecimal 4de5444
20 Vigesimal 15a9ib8
36 Base36 1cmo90

Cryptographic Hash Functions

md5 0663058ffe1419cd9758155d03bfdb1f
sha1 4072bedb9d3ae86fec37d5b2214482b2661b3a71
sha256 862a8322bcbdeb08b51309abf72c8263c6ce83b49cf30c29db56e198eec5c1e5
sha512 c6b45da71d922b00e6d629ad27931b679119991d8d5fe13acdd0401812d9cb49c4bba1b183284867448ad2d6a6e519cd06716defd7d329a9bb8ee17704194fee
ripemd-160 dc708c8ec4ff0fcf5ac649eee9098441c4b6d729

81679428 as geometric shapes

Circle

Radius = n
Diameter 163358856
Circumference 513206981.90843
Area 2.0959226363944E+16

Sphere

Radius = n
Volume 2.2825834943059E+24
Surface area 8.3836905455774E+16
Circumference 513206981.90843

Square

Length = n
Perimeter 326717712
Area 6671528958407184
Diagonal 115512154.84448

Cube

Length = n
Surface area 40029173750443104
Volume 5.4492666920813E+23
Space diagonal 141472919.22916

Equilateral Triangle

Length = n
Perimeter 245038284
Area 2.8888567800321E+15
Altitude 70736459.614582

Triangular Pyramid

Length = n
Surface area 2.8888567800321E+15
Volume 6.4220223841078E+22
Height 38504051.614826