81279425 (number)

81279425 is an odd 8-digits composite number following 81279424 and preceding 81279426. In scientific notation, it is written as 8.1279425 × 10^7. The sum of its digits is 38. It has a total of 4 prime factors and 16 positive divisors. There are 62940800 positive integers (up to 81279425) that are relatively prime to 81279425.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred seventy-nine thousand four hundred twenty-five

Notation

Scientific notation 8.1279425 × 10^7
Engineering notation 8.1279425 × 10^6

Prime Factorization of 81279425

Prime Factorization 25 × 443 × 41 × 179

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81279425
Product of the distinct prime numbers

The prime factorization of 81279425 is 25 × 443 × 41 × 179. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 9, 84, 53, 681, 936, 374, 8569, 6760, 55798, 775863, 843205, 8740645, 6837097, 17878579, 10649684, 249521657, 780236527, 3433046541, 9669456734

Basic calculations (n = 81279425)

Multiplication

n×y
n×2 162558850
n×3 243838275
n×4 325117700
n×5 406397125

Division

n÷y
n÷2 40639712.5
n÷3 27093141.666667
n÷3 20319856.25
n÷5 16255885

Exponentiation

ny
n2 6606344928330625
n3 5.3695991712638E+23
n4 4.364379331208E+31
n5 3.5473424252247E+39

Nth Root

y√n
2√n 9015.5102462368
3√n 433.17183166389
4√n 94.950040791127
5√n 38.194086252785

Divisors of 81279425

1, 25, 41, 179, 443, 1025, 4475, 7339, 11075, 18163, 79297, 183475, 454075, 1982425, 3251177, 81279425

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 -81279424
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 81279425 can be divided by 16 positive divisors. The sum of these divisors (counting 81279425) is 1, the average is 0.0625.

Base conversion 81279425

Base System Value
2 Binary 100110110000011100111000001
3 Ternary 12122221102102002
4 Quaternary 10312003213001
5 Quinary 131301420200
6 Senary 12022033345
8 Octal 466034701
10 Decimal 81279425
12 Duodecimal 23278855
16 Hexadecimal 4d839c1
20 Vigesimal 157jib5
36 Base36 1ce3lt

Cryptographic Hash Functions

md5 b9cf8ec6b0116e9f45ca215bdb4be81a
sha1 cf4db2a0c46e0638fd925ed2c917907714b082b5
sha256 3606552d27401af62cefeac1be3d10386b6c3590eb8949a5574b3d27dd21c6ed
sha512 e7405fc7deebfa29df55a0101ee668852b93a20f21479592158b0a1855f4918123f5bf1692feb5dd16aa56d093da254c0443b67526d7ff001f039ebc7b955f10
ripemd-160 81b2c0efa31d57bc7f5bd8a11c8e77d8cf99089d

81279425 as geometric shapes

Circle

Radius = n
Diameter 162558850
Circumference 510693688.93601
Area 2.0754444693924E+16

Sphere

Radius = n
Volume 2.2492124412219E+24
Surface area 8.3017778775695E+16
Circumference 510693688.93601

Square

Length = n
Perimeter 325117700
Area 6606344928330625
Diagonal 114946465.17689

Cube

Length = n
Surface area 39638069569983750
Volume 5.3695991712638E+23
Space diagonal 140780093.70998

Equilateral Triangle

Length = n
Perimeter 243838275
Area 2.8606312670484E+15
Altitude 70390046.854992

Triangular Pyramid

Length = n
Surface area 2.8606312670484E+15
Volume 6.3281333104238E+22
Height 38315488.392296