Properties of the Number 18060

Eighteen Thousand Sixty

Basics

Value: 18059 → 18060 → 18061

Parity: even

Prime: No

Previous Prime: 18059

Next Prime: 18061

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 5 × 7 × 43

Divisors: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 100011010001100

Octal: 43214

Duodecimal: A550

Hexadecimal: 468c

Square: 326163600

Square Root: 134.38749941865873

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Numbers k such that k-1, k+1 and k²+1 are prime numbers. A70155

Numbers k such that k+1, k²+1 and k⁴+1 are primes. A70325

T(n,k)=Number of nXk 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 4,1,0,2,3 for x=0,1,2,3,4. A196950

Numbers k such that k-1, k+1, k²+1 and k⁴+1 are all prime numbers. A70156

Perimeters of more than one primitive Pythagorean triangle. A24408

Numbers m such that m⁴-1 has no divisors d with 1 < d < m-1. A129293

a(n) = ∑_{i=1..A328404(n)} (A276086(n) mod prime(i))*A002110(i-1), where A276086 is the primorial base exp-function, and A328404(n) gives the length of A276086(n) in primorial base representation. A391936

a(n) = dot_product(1,2,...,n)*(7,8,...,n,1,2,3,4,5,6). A26049

Numbers n such that for some m, A166133(m)=n, A166133(m+1)=n²-1, in increasing order. A256407

Numbers k such that ψ(k²) = k, ψ = A002322; indices of 1 in A341857. A341858