81878488 (number)

81878488 is an even 8-digits composite number following 81878487 and preceding 81878489. In scientific notation, it is written as 8.1878488 × 10^7. The sum of its digits is 52. It has a total of 4 prime factors and 8 positive divisors. There are 40939240 positive integers (up to 81878488) that are relatively prime to 81878488.

Interesting facts

Basic properties

Name

Name eighty-one million eight hundred seventy-eight thousand four hundred eighty-eight

Notation

Scientific notation 8.1878488 × 10^7
Engineering notation 8.1878488 × 10^6

Prime Factorization of 81878488

Prime Factorization 2 × 2 × 2 × 10234811

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20469622
Product of the distinct prime numbers

The prime factorization of 81878488 is 2 × 2 × 2 × 10234811. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81878488)

Multiplication

n×y
n×2 163756976
n×3 245635464
n×4 327513952
n×5 409392440

Division

n÷y
n÷2 40939244
n÷3 27292829.333333
n÷3 20469622
n÷5 16375697.6

Exponentiation

ny
n2 6704086797166144
n3 5.4892049037273E+23
n4 4.4944779783937E+31
n5 3.6800106122018E+39

Nth Root

y√n
2√n 9048.6732729169
3√n 434.23344629665
4√n 95.124514573883
5√n 38.250222242144

Divisors of 81878488

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81878487
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81878488 can be divided by 8 positive divisors. The sum of these divisors (counting 81878488) is 1, the average is 0.125.

Base conversion 81878488

Base System Value
2 Binary 100111000010101110111011000
3 Ternary 12201001212011121
4 Quaternary 10320111313120
5 Quinary 131430102423
6 Senary 12042535024
8 Octal 470256730
10 Decimal 81878488
12 Duodecimal 23507474
16 Hexadecimal 4e15dd8
20 Vigesimal 15beg48
36 Base36 1cqxug

Cryptographic Hash Functions

md5 023d64115882274ea72cdd6f7d8e74ec
sha1 af20fb9145c97179697859e193c8948aacb7119e
sha256 e07e3b764dd174f763e9cb4a2cb3176843db7f4252d9aa76d1571be6ceb9c1e2
sha512 07cea359a39d18cbaaa33c2f5222ebf800d438001fe27a82a8acc1c49098d24c071527cea49d205e8d7607dfd55ad51e8b7d2d5c3dc6de7351876d2d2ae65700
ripemd-160 a1f103f3aa7eeadff0fb252f30135f25cadd0f41

81878488 as geometric shapes

Circle

Radius = n
Diameter 163756976
Circumference 514457712.77568
Area 2.1061509831005E+16

Sphere

Radius = n
Volume 2.2993127732798E+24
Surface area 8.4246039324022E+16
Circumference 514457712.77568

Square

Length = n
Perimeter 327513952
Area 6704086797166144
Diagonal 115793668.1962

Cube

Length = n
Surface area 40224520782996864
Volume 5.4892049037273E+23
Space diagonal 141817701.26292

Equilateral Triangle

Length = n
Perimeter 245635464
Area 2.9029547377609E+15
Altitude 70908850.631459

Triangular Pyramid

Length = n
Surface area 2.9029547377609E+15
Volume 6.4690900179133E+22
Height 38597889.398734