81330390 (number)

81330390 is an even 8-digits composite number following 81330389 and preceding 81330391. In scientific notation, it is written as 8.1330390 × 10^7. The sum of its digits is 27. It has a total of 4 prime factors and 16 positive divisors. There are 21627648 positive integers (up to 81330390) that are relatively prime to 81330390.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred thirty thousand three hundred ninety

Notation

Scientific notation 8.1330390 × 10^7
Engineering notation 8.1330390 × 10^6

Prime Factorization of 81330390

Prime Factorization 2 × 45 × 433 × 2087

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81330390
Product of the distinct prime numbers

The prime factorization of 81330390 is 2 × 45 × 433 × 2087. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 4, 57, 36, 151, 603, 378, 821, 87833, 44702, 22372, 149485, 4537119, 2547285, 22392623, 2013893, 361243132, 779302916, 2470156141, 677207088

Basic calculations (n = 81330390)

Multiplication

n×y
n×2 162660780
n×3 243991170
n×4 325321560
n×5 406651950

Division

n÷y
n÷2 40665195
n÷3 27110130
n÷3 20332597.5
n÷5 16266078

Exponentiation

ny
n2 6614632337552100
n3 5.3797062771972E+23
n4 4.375336096099E+31
n5 3.5584779107681E+39

Nth Root

y√n
2√n 9018.3363210739
3√n 433.2623506349
4√n 94.964921529341
5√n 38.198874853504

Divisors of 81330390

1, 2, 45, 90, 433, 866, 2087, 4174, 19485, 38970, 93915, 187830, 903671, 1807342, 40665195, 81330390

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 -81330389
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 81330390 can be divided by 16 positive divisors. The sum of these divisors (counting 81330390) is 1, the average is 0.0625.

Base conversion 81330390

Base System Value
2 Binary 100110110010000000011010110
3 Ternary 12200001000022200
4 Quaternary 10312100003112
5 Quinary 131310033030
6 Senary 12023105330
8 Octal 466200326
10 Decimal 81330390
12 Duodecimal 232a2246
16 Hexadecimal 4d900d6
20 Vigesimal 15865ja
36 Base36 1cf6xi

Cryptographic Hash Functions

md5 fcd7a3880ddc6220ce3b4ae78a11cb8d
sha1 37aaa34dcca069034d97205012232a11777df590
sha256 ac20d7ca190a54e19f6183300195dad62cde2a57b3bc3e79e20b28b28c9dcfe9
sha512 e3cdc2aea61eceaaf34621ccb2eab5e249ca1fbc89937015909cbe363f67a08a254de66db104b93e524713eb6ef9747395d7e947a14ebb4c70044f7d118c5ff6
ripemd-160 5c1f09e28a7b7029ac49cf9926efe60cc3ec483c

81330390 as geometric shapes

Circle

Radius = n
Diameter 162660780
Circumference 511013911.47519
Area 2.0780480357851E+16

Sphere

Radius = n
Volume 2.2534460958552E+24
Surface area 8.3121921431405E+16
Circumference 511013911.47519

Square

Length = n
Perimeter 325321560
Area 6614632337552100
Diagonal 115018540.57109

Cube

Length = n
Surface area 39687794025312600
Volume 5.3797062771972E+23
Space diagonal 140868367.67939

Equilateral Triangle

Length = n
Perimeter 243991170
Area 2.8642198205071E+15
Altitude 70434183.839696

Triangular Pyramid

Length = n
Surface area 2.8642198205071E+15
Volume 6.3400446489967E+22
Height 38339513.523698