## 28818

28,818 (twenty-eight thousand eight hundred eighteen) is an even five-digits composite number following 28817 and preceding 28819. In scientific notation, it is written as 2.8818 × 104. The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors. There are 9,600 positive integers (up to 28818) that are relatively prime to 28818.

## Basic properties

• Is Prime? No
• Number parity Even
• Number length 5
• Sum of Digits 27
• Digital Root 9

## Name

Short name 28 thousand 818 twenty-eight thousand eight hundred eighteen

## Notation

Scientific notation 2.8818 × 104 28.818 × 103

## Prime Factorization of 28818

Prime Factorization 2 × 32 × 1601

Composite number
Distinct Factors Total Factors Radical ω(n) 3 Total number of distinct prime factors Ω(n) 4 Total number of prime factors rad(n) 9606 Product of the distinct prime numbers λ(n) 1 Returns the parity of Ω(n), such that λ(n) = (-1)Ω(n) μ(n) 0 Returns: 1, if n has an even number of prime factors (and is square free) −1, if n has an odd number of prime factors (and is square free) 0, if n has a squared prime factor Λ(n) 0 Returns log(p) if n is a power pk of any prime p (for any k >= 1), else returns 0

The prime factorization of 28,818 is 2 × 32 × 1601. Since it has a total of 4 prime factors, 28,818 is a composite number.

## Divisors of 28818

1, 2, 3, 6, 9, 18, 1601, 3202, 4803, 9606, 14409, 28818

12 divisors

 Even divisors 6 6 4 2
Total Divisors Sum of Divisors Aliquot Sum τ(n) 12 Total number of the positive divisors of n σ(n) 62478 Sum of all the positive divisors of n s(n) 33660 Sum of the proper positive divisors of n A(n) 5206.5 Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) G(n) 169.759 Returns the nth root of the product of n divisors H(n) 5.535 Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28,818 can be divided by 12 positive divisors (out of which 6 are even, and 6 are odd). The sum of these divisors (counting 28,818) is 62,478, the average is 520,6.5.

## Other Arithmetic Functions (n = 28818)

1 φ(n) n
Euler Totient Carmichael Lambda Prime Pi φ(n) 9600 Total number of positive integers not greater than n that are coprime to n λ(n) 4800 Smallest positive number such that aλ(n) ≡ 1 (mod n) for all a coprime to n π(n) ≈ 3135 Total number of primes less than or equal to n r2(n) 8 The number of ways n can be represented as the sum of 2 squares

There are 9,600 positive integers (less than 28,818) that are coprime with 28,818. And there are approximately 3,135 prime numbers less than or equal to 28,818.

## Divisibility of 28818

 m n mod m 2 3 4 5 6 7 8 9 0 0 2 3 0 6 2 0

The number 28,818 is divisible by 2, 3, 6 and 9.

• Abundant

• Polite

## Base conversion (28818)

Base System Value
2 Binary 111000010010010
3 Ternary 1110112100
4 Quaternary 13002102
5 Quinary 1410233
6 Senary 341230
8 Octal 70222
10 Decimal 28818
12 Duodecimal 14816
20 Vigesimal 3c0i
36 Base36 m8i

## Basic calculations (n = 28818)

### Multiplication

n×i
 n×2 57636 86454 115272 144090

### Division

ni
 n⁄2 14409 9606 7204.5 5763.6

### Exponentiation

ni
 n2 830477124 23932689759432 689692253487311376 19875551360997339233568

### Nth Root

i√n
 2√n 169.759 30.6588 13.0291 7.79709

## 28818 as geometric shapes

### Circle

 Diameter 57636 181069 2.60902e+09

### Sphere

 Volume 1.00249e+14 1.04361e+10 181069

### Square

Length = n
 Perimeter 115272 8.30477e+08 40754.8

### Cube

Length = n
 Surface area 4.98286e+09 2.39327e+13 49914.2

### Equilateral Triangle

Length = n
 Perimeter 86454 3.59607e+08 24957.1

### Triangular Pyramid

Length = n
 Surface area 1.43843e+09 2.82049e+12 23529.8

## Cryptographic Hash Functions

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