81288315 (number)

81288315 is an odd 8-digits composite number following 81288314 and preceding 81288316. In scientific notation, it is written as 8.1288315 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 12 positive divisors. There are 43353744 positive integers (up to 81288315) that are relatively prime to 81288315.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred eighty-eight thousand three hundred fifteen

Notation

Scientific notation 8.1288315 × 10^7
Engineering notation 8.1288315 × 10^6

Prime Factorization of 81288315

Prime Factorization 5 × 3 × 3 × 1806407

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 27096105
Product of the distinct prime numbers

The prime factorization of 81288315 is 5 × 3 × 3 × 1806407. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 1, 99, 5, 265, 988, 1324, 8305, 91892, 98510, 793693, 425622, 9615238, 9297245, 910537, 48983142, 328971374, 887508286, 7330126191, 237191137

Basic calculations (n = 81288315)

Multiplication

n×y
n×2 162576630
n×3 243864945
n×4 325153260
n×5 406441575

Division

n÷y
n÷2 40644157.5
n÷3 27096105
n÷3 20322078.75
n÷5 16257663

Exponentiation

ny
n2 6607790155539225
n3 5.3713612761737E+23
n4 4.3662890739641E+31
n5 3.5492828162545E+39

Nth Root

y√n
2√n 9016.0032719604
3√n 433.1876239229
4√n 94.952636993189
5√n 38.194921717781

Divisors of 81288315

1, 3, 5, 9, 15, 45, 1806407, 5419221, 9032035, 16257663, 27096105, 81288315

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81288314
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81288315 can be divided by 12 positive divisors. The sum of these divisors (counting 81288315) is 1, the average is 0.083333333333333.

Base conversion 81288315

Base System Value
2 Binary 100110110000101110001111011
3 Ternary 12122221212121100
4 Quaternary 10312011301323
5 Quinary 131302211230
6 Senary 12022142443
8 Octal 466056173
10 Decimal 81288315
12 Duodecimal 23281a23
16 Hexadecimal 4d85c7b
20 Vigesimal 15810ff
36 Base36 1ceagr

Cryptographic Hash Functions

md5 fd07af189a5a5d6b19d304b176369001
sha1 1e1ac034b1f1208bb67b84af545a700a6eaf5180
sha256 1df48e3b2f7db380a862835a77b717bbfe167a2242b6681f7084debd2f43fe27
sha512 753fca2876633d90163c7c733bc85253da452059179cc32632ac38cbf9cfde95bdb7549d5a2f832d15b4e74ff1fe6d7bfa95caa9fbcf0a8cf14406557df05582
ripemd-160 40d48f1c8cdac03498ca0a6d1b1de67ee6eec9a9

81288315 as geometric shapes

Circle

Radius = n
Diameter 162576630
Circumference 510749546.45339
Area 2.0758985009105E+16

Sphere

Radius = n
Volume 2.2499505500005E+24
Surface area 8.303594003642E+16
Circumference 510749546.45339

Square

Length = n
Perimeter 325153260
Area 6607790155539225
Diagonal 114959037.53546

Cube

Length = n
Surface area 39646740933235350
Volume 5.3713612761737E+23
Space diagonal 140795491.64166

Equilateral Triangle

Length = n
Perimeter 243864945
Area 2.8612570687868E+15
Altitude 70397745.820832

Triangular Pyramid

Length = n
Surface area 2.8612570687868E+15
Volume 6.3302099709754E+22
Height 38319679.178485