81361264 (number)

81361264 is an even 8-digits composite number following 81361263 and preceding 81361265. In scientific notation, it is written as 8.1361264 × 10^7. The sum of its digits is 31. It has a total of 5 prime factors and 10 positive divisors. There are 40680624 positive integers (up to 81361264) that are relatively prime to 81361264.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred sixty-one thousand two hundred sixty-four

Notation

Scientific notation 8.1361264 × 10^7
Engineering notation 8.1361264 × 10^6

Prime Factorization of 81361264

Prime Factorization 2 × 2 × 2 × 2 × 5085079

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 10170158
Product of the distinct prime numbers

The prime factorization of 81361264 is 2 × 2 × 2 × 2 × 5085079. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 5, 16, 83, 653, 92, 9026, 6317, 82560, 73163, 83521, 569371, 1913063, 800973, 39496554, 96038388, 642238050, 606549749, 7286771990, 1644971445

Basic calculations (n = 81361264)

Multiplication

n×y
n×2 162722528
n×3 244083792
n×4 325445056
n×5 406806320

Division

n÷y
n÷2 40680632
n÷3 27120421.333333
n÷3 20340316
n÷5 16272252.8

Exponentiation

ny
n2 6619655279677696
n3 5.3858352079885E+23
n4 4.3819836021765E+31
n5 3.5652372470035E+39

Nth Root

y√n
2√n 9020.0478934427
3√n 433.31716757576
4√n 94.973932704941
5√n 38.201774564238

Divisors of 81361264

1, 2, 4, 8, 16, 5085079, 10170158, 20340316, 40680632, 81361264

10 divisors

τ Total Divisors 10
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81361263
Sum of the proper positive divisors of n
A Arithmetic Mean 0.1
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 10
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81361264 can be divided by 10 positive divisors. The sum of these divisors (counting 81361264) is 1, the average is 0.1.

Base conversion 81361264

Base System Value
2 Binary 100110110010111100101110000
3 Ternary 12200002120200011
4 Quaternary 10312113211300
5 Quinary 131312030024
6 Senary 12023504304
8 Octal 466274560
10 Decimal 81361264
12 Duodecimal 232b8094
16 Hexadecimal 4d97970
20 Vigesimal 158a334
36 Base36 1cfur4

Cryptographic Hash Functions

md5 8d12558a491811a392390b1f2889e326
sha1 62347da2ecf47a0f2fd60f0aa78701e69f01285b
sha256 d0103ea686a923b0280ace502409dcc003503b5c542b1d3782992cdf7e29dea1
sha512 8bb5a1095e820319be6aae24320d7e3c1ed99b78668b9d607ce268c3cadb9548c92a1cd72d0f32e092928249a578d172b29c6e8900781cc03f7ed5dc68952536
ripemd-160 1329eeb9e21958149d76cb97da5ff35ea6eed335

81361264 as geometric shapes

Circle

Radius = n
Diameter 162722528
Circumference 511207898.53836
Area 2.0796260395932E+16

Sphere

Radius = n
Volume 2.2560133763816E+24
Surface area 8.3185041583729E+16
Circumference 511207898.53836

Square

Length = n
Perimeter 325445056
Area 6619655279677696
Diagonal 115062203.00062

Cube

Length = n
Surface area 39717931678066176
Volume 5.3858352079885E+23
Space diagonal 140921843.01602

Equilateral Triangle

Length = n
Perimeter 244083792
Area 2.8663948182483E+15
Altitude 70460921.508012

Triangular Pyramid

Length = n
Surface area 2.8663948182483E+15
Volume 6.3472676632032E+22
Height 38354067.666873