Properties of the Number -19444

Nineteen Thousand Four Hundred Forty-Four

Basics

Value: -19445 → -19444 → -19443

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 4861

Divisors: 1, 2, 4, 4861, 9722, 19444

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100101111110100

Octal: -45764

Duodecimal: -B304

Hexadecimal: -4bf4

Square: 378069136

Square Root: 139.44174410842686

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

Coordination sequence for octagonal tiling is a(n) + A103908(n)*sqrt(2). A103909

Number of compositions of n whose run-lengths are unimodal. A332726

a(n) = 2*(n³ + n² + n - 1). A155120

Number of trapezoids, distinct up to congruence, on an n X n grid (or geoboard). A181945

p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - S² - S⁴. A291400

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 76 ones. A31844

Number of right triangles on a (n+1) X 4 grid. A189808

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 169", based on the 5-celled von Neumann neighborhood. A270463

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 758", based on the 5-celled von Neumann neighborhood. A273490