18978081 (number)

18978081 is an odd 8-digits composite number following 18978080 and preceding 18978082. In scientific notation, it is written as 1.8978081 × 10^7. The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors. There are 12413232 positive integers (up to 18978081) that are relatively prime to 18978081.

Interesting facts

Basic properties

Name

Name eighteen million nine hundred seventy-eight thousand eighty-one

Notation

Scientific notation 1.8978081 × 10^7
Engineering notation 1.8978081 × 10^6

Prime Factorization of 18978081

Prime Factorization 3 × 53 × 119359

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 18978081
Product of the distinct prime numbers

The prime factorization of 18978081 is 3 × 53 × 119359. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 2, 76, 77, 935, 538, 3672, 9840, 26906, 94159, 665932, 103804, 2843322, 2502807, 71217087, 79386051, 209882629, 600186975, 1515442390, 5153213410

Basic calculations (n = 18978081)

Multiplication

n×y
n×2 37956162
n×3 56934243
n×4 75912324
n×5 94890405

Division

n÷y
n÷2 9489040.5
n÷3 6326027
n÷3 4744520.25
n÷5 3795616.2

Exponentiation

ny
n2 360167558442561
n3 6.8352890976952E+21
n4 1.2972067015448E+29
n5 2.4618493855659E+36

Nth Root

y√n
2√n 4356.383936248
3√n 266.73751364126
4√n 66.002908543852
5√n 28.552915441289

Divisors of 18978081

1, 3, 53, 159, 119359, 358077, 6326027, 18978081

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 -18978080
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 18978081 can be divided by 8 positive divisors. The sum of these divisors (counting 18978081) is 1, the average is 0.125.

Base conversion 18978081

Base System Value
2 Binary 1001000011001010100100001
3 Ternary 1022201012000220
4 Quaternary 1020121110201
5 Quinary 14324244311
6 Senary 1514433253
8 Octal 110312441
10 Decimal 18978081
12 Duodecimal 6432829
16 Hexadecimal 1219521
20 Vigesimal 5ic541
36 Base36 barkx

Cryptographic Hash Functions

md5 8357a13825c138322b6dfc5b014f3403
sha1 6882e47018f0fb7b6275fe23f3f8f8d1f44bb551
sha256 77109ed79d8cc32b8f193793d846236d47d7c3796ef170ab38e6f634cc8a4bca
sha512 9d90c8f8c9f6c59cd7af45f24609d20bb64f8eda15d1b44e5c2a69d256c9b876fe064a2605fad6f2c8615dc3d85a7b0250900afd4e48d5e913c73cc06b871da5
ripemd-160 d108adc3f924cd9f41c75592b42b95e80a770c00

18978081 as geometric shapes

Circle

Radius = n
Diameter 37956162
Circumference 119242799.69766
Area 1.1314997556645E+15

Sphere

Radius = n
Volume 2.8631592019309E+22
Surface area 4.5259990226581E+15
Circumference 119242799.69766

Square

Length = n
Perimeter 75912324
Area 360167558442561
Diagonal 26839059.538015

Cube

Length = n
Surface area 2161005350655366
Volume 6.8352890976952E+21
Space diagonal 32871000.522158

Equilateral Triangle

Length = n
Perimeter 56934243
Area 1.5595712761514E+14
Altitude 16435500.261079

Triangular Pyramid

Length = n
Surface area 1.5595712761514E+14
Volume 8.0554654539179E+20
Height 8946353.1793384