81444615 (number)

81444615 is an odd 8-digits composite number following 81444614 and preceding 81444616. In scientific notation, it is written as 8.1444615 × 10^7. The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors. There are 35938560 positive integers (up to 81444615) that are relatively prime to 81444615.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-four thousand six hundred fifteen

Notation

Scientific notation 8.1444615 × 10^7
Engineering notation 8.1444615 × 10^6

Prime Factorization of 81444615

Prime Factorization 145 × 21 × 7 × 3821

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81444615
Product of the distinct prime numbers

The prime factorization of 81444615 is 145 × 21 × 7 × 3821. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 4, 79, 42, 500, 730, 9319, 2980, 17731, 26239, 876470, 888299, 4812123, 1866182, 67025728, 46239026, 709964982, 913986748, 6469968331, 7839648277

Basic calculations (n = 81444615)

Multiplication

n×y
n×2 162889230
n×3 244333845
n×4 325778460
n×5 407223075

Division

n÷y
n÷2 40722307.5
n÷3 27148205
n÷3 20361153.75
n÷5 16288923

Exponentiation

ny
n2 6633225312498225
n3 5.4024048178467E+23
n4 4.3999678046367E+31
n5 3.5835368386103E+39

Nth Root

y√n
2√n 9024.6670298687
3√n 433.46508846961
4√n 94.998247509461
5√n 38.209598562898

Divisors of 81444615

1, 7, 21, 145, 147, 1015, 3045, 3821, 21315, 26747, 80241, 554045, 561687, 3878315, 11634945, 81444615

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 -81444614
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 81444615 can be divided by 16 positive divisors. The sum of these divisors (counting 81444615) is 1, the average is 0.0625.

Base conversion 81444615

Base System Value
2 Binary 100110110101011111100000111
3 Ternary 12200020211000020
4 Quaternary 10312223330013
5 Quinary 131322211430
6 Senary 12025350223
8 Octal 466537407
10 Decimal 81444615
12 Duodecimal 23338373
16 Hexadecimal 4dabf07
20 Vigesimal 1590baf
36 Base36 1chn2f

Cryptographic Hash Functions

md5 509c3a2cb7122faf832a631360791233
sha1 6378d71332c19805e0c40cfb3c792cbff318fb4c
sha256 9e6c78977519ed21269616996577bc470750466db4ceacec30bc120f6817cdf0
sha512 0689a2bacce453cfcb9193cc8675b310fa640d998514b92eafd99b3ee452580317614ed3895098c233b945ebc5224b7587c234c102cd9e6909a4b8c0c4f4fd66
ripemd-160 a9f0e79ab77b2bc70987ec20c99ea0b8ddcadf0d

81444615 as geometric shapes

Circle

Radius = n
Diameter 162889230
Circumference 511731608.3169
Area 2.083889191135E+16

Sphere

Radius = n
Volume 2.2629540383287E+24
Surface area 8.3355567645401E+16
Circumference 511731608.3169

Square

Length = n
Perimeter 325778460
Area 6633225312498225
Diagonal 115180079.11526

Cube

Length = n
Surface area 39799351874989350
Volume 5.4024048178467E+23
Space diagonal 141066211.18289

Equilateral Triangle

Length = n
Perimeter 244333845
Area 2.8722708148247E+15
Altitude 70533105.591443

Triangular Pyramid

Length = n
Surface area 2.8722708148247E+15
Volume 6.3667951356905E+22
Height 38393359.705085