Properties of the Number 18604

Eighteen Thousand Six Hundred Four

Basics

Value: 18603 → 18604 → 18605

Parity: even

Prime: No

Previous Prime: 18593

Next Prime: 18617

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 4651

Divisors: 1, 2, 4, 4651, 9302, 18604

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100010101100

Octal: 44254

Duodecimal: A924

Hexadecimal: 48ac

Square: 346108816

Square Root: 136.3964808930201

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 n-node trees with a forbidden limb of length 6. A2992

T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 0 or 2 neighboring 1s. A297338

a(n) = floor(n*(n-1)*(n-2)*(n-3)/5). A11915

Expansion of 1/(x^k*(1 - x - 3·x^k+1)) for k=3. A143454

Coefficients in expansion of 1/(1 - x - 3·x⁴). A318774

Number of connected planar graphs with n nodes and even degrees (i.e., that are Eulerian). A49365

a(n) = 4*(5·n² - 5·n + 1). A193448

Number of length n 1..(2+1) arrays with every leading partial sum divisible by 2, 3, 5, 7 or 11. A254941

Number of nX7 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 0 or 2 neighboring 1s. A297337

Number of 3Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 0 or 2 neighboring 1s. A297340