Properties of the Number 19424

Nineteen Thousand Four Hundred Twenty-Four

Basics

Value: 19423 → 19424 → 19425

Parity: even

Prime: No

Previous Prime: 19423

Next Prime: 19427

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ⁵ × 607

Divisors: 1, 2, 4, 8, 16, 32, 607, 1214, 2428, 4856

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100101111100000

Octal: 45740

Duodecimal: B2A8

Hexadecimal: 4be0

Square: 377291776

Square Root: 139.37001112147476

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

Expansion of (1+2·x)/((1+x)*(1-x²-x³)). A98601

Sum of squares of pentanacci numbers (A001591). A107243

G.f. satisfies A(x) = 1 + 2·x*A(x) + 2·x³*A(x)³. A367113

Number of fixed polyaboloes (or polytans) with n cells, where two triangles sharing a hypotenuse (making up a square) are counted as a single cell. A390998

Number of (w,x,y,z) with all terms in {1,...,n} and 2·w*x>3·y*z. A211922

Expansion of ∏_k>=1 (1 + x^k) * (1 + x^2·k) * (1 + x^3·k) * (1 + x^4·k) / ((1 - x^k) * (1 - x^2·k) * (1 - x^3·k) * (1 - x^4·k)). A327049

Number of non-unitary square divisors of n!. A375188

Numbers k such that (k+3, k+5, k+17, k+257, k+65537) are all primes. A63799

Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+2x+2y>0. A211624

Binomial transform of A215495(n). A217988