Properties of the Number 18450

Eighteen Thousand Four Hundred Fifty

Basics

Value: 18449 → 18450 → 18451

Parity: even

Prime: No

Previous Prime: 18443

Next Prime: 18451

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 ² × 41

Divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 25

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100100000010010

Octal: 44022

Duodecimal: A816

Hexadecimal: 4812

Square: 340402500

Square Root: 135.83077707206124

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

Number of orbits of length n under the map whose periodic points are counted by A000984. A60165

Column 9 of array illustrated in A089574 and related to A034261. A109820

a(n) = n*(5·n²-8·n+5)/2. A226449

Number of asymmetric mobiles (circular rooted trees) with n nodes and 3 leaves. A55364

a(n) = (3+n)*(2 + 33·n + n²)/6. A101860

Expansion of a(q)² * b(q) in powers of q where a(), b() are cubic AGM θ functions. A231948

(1/4)*number of nonsquare rectangles with corners on an n X n grid of points. A122225

Expansion of b(q)³ - 3·c(q)³ in powers of q where b(), c() are cubic AGM θ functions. A231961

a(n) is the smallest number whose Collatz ('3x+1') trajectory crosses its initial value exactly n times. A301937

a(n) is the number of words of length n over the alphabet {a,b,c} with an even number of appearances of the letter 'a' and the sum of appearances of the letters 'b' and 'c' add up to at most 3. A341896