81878560 (number)

81878560 is an even 8-digits composite number following 81878559 and preceding 81878561. In scientific notation, it is written as 8.1878560 × 10^7. The sum of its digits is 43. It has a total of 8 prime factors and 48 positive divisors. There are 32659200 positive integers (up to 81878560) that are relatively prime to 81878560.

Interesting facts

Basic properties

Name

Name eighty-one million eight hundred seventy-eight thousand five hundred sixty

Notation

Scientific notation 8.1878560 × 10^7
Engineering notation 8.1878560 × 10^6

Prime Factorization of 81878560

Prime Factorization 2 × 2 × 2 × 2 × 2 × 5 × 631 × 811

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 5117410
Product of the distinct prime numbers

The prime factorization of 81878560 is 2 × 2 × 2 × 2 × 2 × 5 × 631 × 811. Since it has a total of 8 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81878560)

Multiplication

n×y
n×2 163757120
n×3 245635680
n×4 327514240
n×5 409392800

Division

n÷y
n÷2 40939280
n÷3 27292853.333333
n÷3 20469640
n÷5 16375712

Exponentiation

ny
n2 6704098587673600
n3 5.4892193845675E+23
n4 4.4944937873247E+31
n5 3.6800267923509E+39

Nth Root

y√n
2√n 9048.6772513998
3√n 434.23357357795
4√n 95.124535485856
5√n 38.250228969222

Divisors of 81878560

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81878559
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81878560 can be divided by 48 positive divisors. The sum of these divisors (counting 81878560) is 1, the average is 0.020833333333333.

Base conversion 81878560

Base System Value
2 Binary 100111000010101111000100000
3 Ternary 12201001212021021
4 Quaternary 10320111320200
5 Quinary 131430103220
6 Senary 12042535224
8 Octal 470257040
10 Decimal 81878560
12 Duodecimal 23507514
16 Hexadecimal 4e15e20
20 Vigesimal 15beg80
36 Base36 1cqxwg

Cryptographic Hash Functions

md5 7f0b490df5dec11afe8ec4a17ee71f42
sha1 239ba9e7297c8c761e2a831709c8252395abb72b
sha256 ab2b2692e55046fb23ea5a608be41fa4d3fbe417abaab68dfc5b151caa1849d2
sha512 a81397a56d9a9acfef412f1eca90fe515e3fdeaa24d8c9ef630ba7f49e0527d2036228d17e57f4348eaa0ea6f9516ee4f0d1a2c3ce7c70bb7cb464226c33456e
ripemd-160 c48921f95e36a3d95aecac27fd813395f0f2bb81

81878560 as geometric shapes

Circle

Radius = n
Diameter 163757120
Circumference 514458165.16502
Area 2.1061546871977E+16

Sphere

Radius = n
Volume 2.299318839E+24
Surface area 8.4246187487908E+16
Circumference 514458165.16502

Square

Length = n
Perimeter 327514240
Area 6704098587673600
Diagonal 115793770.01958

Cube

Length = n
Surface area 40224591526041600
Volume 5.4892193845675E+23
Space diagonal 141817825.97058

Equilateral Triangle

Length = n
Perimeter 245635680
Area 2.9029598432004E+15
Altitude 70908912.985288

Triangular Pyramid

Length = n
Surface area 2.9029598432004E+15
Volume 6.4691070837472E+22
Height 38597923.33986