81936243 (number)

81936243 is an odd 8-digits composite number following 81936242 and preceding 81936244. In scientific notation, it is written as 8.1936243 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 50637312 positive integers (up to 81936243) that are relatively prime to 81936243.

Interesting facts

Basic properties

Name

Name eighty-one million nine hundred thirty-six thousand two hundred forty-three

Notation

Scientific notation 8.1936243 × 10^7
Engineering notation 8.1936243 × 10^6

Prime Factorization of 81936243

Prime Factorization 9 × 17 × 67 × 7993

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81936243
Product of the distinct prime numbers

The prime factorization of 81936243 is 9 × 17 × 67 × 7993. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 2, 94, 59, 888, 294, 1582, 1383, 12815, 1263, 218903, 535812, 8300865, 2638493, 60491802, 47096450, 607043863, 237277061, 5139273378, 483670997

Basic calculations (n = 81936243)

Multiplication

n×y
n×2 163872486
n×3 245808729
n×4 327744972
n×5 409681215

Division

n÷y
n÷2 40968121.5
n÷3 27312081
n÷3 20484060.75
n÷5 16387248.6

Exponentiation

ny
n2 6713547916955049
n3 5.5008289351577E+23
n4 4.5071725633251E+31
n5 3.6930078639154E+39

Nth Root

y√n
2√n 9051.8640621697
3√n 434.33552137108
4√n 95.141284741009
5√n 38.255616866775

Divisors of 81936243

1, 9, 17, 67, 153, 603, 1139, 7993, 10251, 71937, 135881, 535531, 1222929, 4819779, 9104027, 81936243

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 -81936242
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 81936243 can be divided by 16 positive divisors. The sum of these divisors (counting 81936243) is 1, the average is 0.0625.

Base conversion 81936243

Base System Value
2 Binary 100111000100011111101110011
3 Ternary 12201011210101200
4 Quaternary 10320203331303
5 Quinary 131433424433
6 Senary 12044102243
8 Octal 470437563
10 Decimal 81936243
12 Duodecimal 23534983
16 Hexadecimal 4e23f73
20 Vigesimal 15c20c3
36 Base36 1cs6er

Cryptographic Hash Functions

md5 1bc85203cc0c901d0eec56e11fe38f2c
sha1 bd4ae17bf18e6af28bc49afd74fa0cf72a273b73
sha256 cbe8dfe62e8902f1030bf5d2b420f46170de537910ad39e448c5b4f353a91ce1
sha512 d56be5c2e204ee2556a2612e58f3b69e1c9808195d2504de6cfe45a5e53a8ed97653245df6244231c545a24e1b888a982356fc6d85e908ea92ac84f2b5b2d4f4
ripemd-160 3bd86080f76d8c509781312e8d6eed493261797c

81936243 as geometric shapes

Circle

Radius = n
Diameter 163872486
Circumference 514820598.1431
Area 2.1091232815429E+16

Sphere

Radius = n
Volume 2.3041818361794E+24
Surface area 8.4364931261716E+16
Circumference 514820598.1431

Square

Length = n
Perimeter 327744972
Area 6713547916955049
Diagonal 115875346.1005

Cube

Length = n
Surface area 40281287501730294
Volume 5.5008289351577E+23
Space diagonal 141917735.85731

Equilateral Triangle

Length = n
Perimeter 245808729
Area 2.9070515228036E+15
Altitude 70958867.928655

Triangular Pyramid

Length = n
Surface area 2.9070515228036E+15
Volume 6.4827890703287E+22
Height 38625115.366833