81218084 (number)

81218084 is an even 8-digits composite number following 81218083 and preceding 81218085. In scientific notation, it is written as 8.1218084 × 10^7. The sum of its digits is 32. It has a total of 4 prime factors and 12 positive divisors. There are 37838880 positive integers (up to 81218084) that are relatively prime to 81218084.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred eighteen thousand eighty-four

Notation

Scientific notation 8.1218084 × 10^7
Engineering notation 8.1218084 × 10^6

Prime Factorization of 81218084

Prime Factorization 2 × 2 × 1159 × 17519

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40609042
Product of the distinct prime numbers

The prime factorization of 81218084 is 2 × 2 × 1159 × 17519. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 5, 94, 5, 93, 649, 3666, 2904, 26033, 73599, 9401, 527669, 9543931, 9273654, 92251629, 92404384, 978871393, 304444964, 4277406851, 4761808415

Basic calculations (n = 81218084)

Multiplication

n×y
n×2 162436168
n×3 243654252
n×4 324872336
n×5 406090420

Division

n÷y
n÷2 40609042
n÷3 27072694.666667
n÷3 20304521
n÷5 16243616.8

Exponentiation

ny
n2 6596377168631056
n3 5.3574511497756E+23
n4 4.3512191750837E+31
n5 3.5339768446436E+39

Nth Root

y√n
2√n 9012.1076336227
3√n 433.0628336795
4√n 94.932121189946
5√n 38.18831955101

Divisors of 81218084

1, 2, 4, 1159, 2318, 4636, 17519, 35038, 70076, 20304521, 40609042, 81218084

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 -81218083
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 81218084 can be divided by 12 positive divisors. The sum of these divisors (counting 81218084) is 1, the average is 0.083333333333333.

Base conversion 81218084

Base System Value
2 Binary 100110101110100101000100100
3 Ternary 12122211022021012
4 Quaternary 10311310220210
5 Quinary 131242434314
6 Senary 12020441352
8 Octal 465645044
10 Decimal 81218084
12 Duodecimal 23249258
16 Hexadecimal 4d74a24
20 Vigesimal 157c544
36 Base36 1ccs9w

Cryptographic Hash Functions

md5 031e6c6898cbc36b7c417f2ddcc6e5a3
sha1 d2b9a1c1008d08578208ec8ad56525f23dfbc9b7
sha256 dbad380d63640ddac9bc698199eb6d306f08fbf3545952d3dc571aa5b35d7179
sha512 2546d15a9388b4c07ff4a5913d26e30f413025eb9c831122f131c8f58b34a31b10182509d81667e21c51960c71c04af14f133fd6e2b468d7a249dfcdeea16031
ripemd-160 f173598d49ed79bf7ed35ddb41228fe86b90b065

81218084 as geometric shapes

Circle

Radius = n
Diameter 162436168
Circumference 510308272.06608
Area 2.0723130053279E+16

Sphere

Radius = n
Volume 2.2441238898802E+24
Surface area 8.2892520213115E+16
Circumference 510308272.06608

Square

Length = n
Perimeter 324872336
Area 6596377168631056
Diagonal 114859715.90276

Cube

Length = n
Surface area 39578263011786336
Volume 5.3574511497756E+23
Space diagonal 140673847.9814

Equilateral Triangle

Length = n
Perimeter 243654252
Area 2.8563151004891E+15
Altitude 70336923.990698

Triangular Pyramid

Length = n
Surface area 2.8563151004891E+15
Volume 6.3138167298033E+22
Height 38286571.967586