81528090 (number)

81528090 is an even 8-digits composite number following 81528089 and preceding 81528091. In scientific notation, it is written as 8.1528090 × 10^7. The sum of its digits is 33. It has a total of 6 prime factors and 64 positive divisors. There are 17080320 positive integers (up to 81528090) that are relatively prime to 81528090.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred twenty-eight thousand ninety

Notation

Scientific notation 8.1528090 × 10^7
Engineering notation 8.1528090 × 10^6

Prime Factorization of 81528090

Prime Factorization 2 × 5 × 21 × 17 × 41 × 557

Composite number
ω Distinct Factors 6
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 81528090
Product of the distinct prime numbers

The prime factorization of 81528090 is 2 × 5 × 21 × 17 × 41 × 557. Since it has a total of 6 prime factors.

Most popular turbo-numbers

2, 9, 80, 3, 915, 605, 3169, 5156, 29815, 12463, 596938, 139888, 4639144, 7963975, 25850500, 80382138, 139260621, 892145576, 5674527377, 21248805

Basic calculations (n = 81528090)

Multiplication

n×y
n×2 163056180
n×3 244584270
n×4 326112360
n×5 407640450

Division

n÷y
n÷2 40764045
n÷3 27176030
n÷3 20382022.5
n÷5 16305618

Exponentiation

ny
n2 6646829459048100
n3 5.4190331035192E+23
n4 4.418034185767E+31
n5 3.6019388872029E+39

Nth Root

y√n
2√n 9029.2906698145
3√n 433.61312831013
4√n 95.022579789303
5√n 38.217427783822

Divisors of 81528090

1, 2, 5, 10, 17, 21, 34, 41, 42, 82, 85, 105, 170, 205, 210, 357, 410, 557, 697, 714, 861, 1114, 1394, 1722, 1785, 2785, 3485, 3570, 4305, 5570, 6970, 8610, 9469, 11697, 14637, 18938, 22837, 23394, 29274, 45674, 47345, 58485, 73185, 94690, 114185, 116970, 146370, 198849, 228370, 388229, 397698, 479577, 776458, 959154, 994245, 1941145, 1988490, 2397885, 3882290, 4795770, 8152809, 16305618, 40764045, 81528090

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81528089
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81528090 can be divided by 64 positive divisors. The sum of these divisors (counting 81528090) is 1, the average is 0.015625.

Base conversion 81528090

Base System Value
2 Binary 100110111000000010100011010
3 Ternary 12200102001111220
4 Quaternary 10313000110122
5 Quinary 131332344330
6 Senary 12031232510
8 Octal 467002432
10 Decimal 81528090
12 Duodecimal 23378736
16 Hexadecimal 4dc051a
20 Vigesimal 159b04a
36 Base36 1cjfh6

Cryptographic Hash Functions

md5 660ba72acca59f5e8e489cca2e10ff20
sha1 7488537e863842507ecc6a691be09ca95c234ef2
sha256 69da539bd53275999855bdbb3f7247c5ecabab571190dccc1a04ff607d55061e
sha512 e2b3d742970227d05aa357f2b799147eef0c3159fc9ef944f74a11c8e49691e5afaecd2403138427a5d1409c575d44df245aea0522033941b1149fc16950e419
ripemd-160 18b84929793a5c739bac5328c72d7ca742bf7c3a

81528090 as geometric shapes

Circle

Radius = n
Diameter 163056180
Circumference 512256097.21041
Area 2.088163059821E+16

Sphere

Radius = n
Volume 2.2699192783435E+24
Surface area 8.3526522392839E+16
Circumference 512256097.21041

Square

Length = n
Perimeter 326112360
Area 6646829459048100
Diagonal 115298130.59237

Cube

Length = n
Surface area 39880976754288600
Volume 5.4190331035192E+23
Space diagonal 141210794.12405

Equilateral Triangle

Length = n
Perimeter 244584270
Area 2.8781615830792E+15
Altitude 70605397.062024

Triangular Pyramid

Length = n
Surface area 2.8781615830792E+15
Volume 6.3863917582881E+22
Height 38432710.197458