Properties of the Number 80320

Eighty Thousand Three Hundred Twenty

Basics

Value: 80319 → 80320 → 80321

Parity: even

Prime: No

Previous Prime: 80317

Next Prime: 80329

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ⁶ × 5 × 251

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011100111000000

Octal: 234700

Duodecimal: 3A594

Hexadecimal: 139c0

Square: 6451302400

Square Root: 283.4078333426936

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

a(n) = [xⁿ] ∏_k>=1 ((1 + x^2·k-1)/(1 - x^2·k))ⁿ. A296045

Cyclotomic polynomials Phi_n at x=φ, floored down (where φ = τ = (sqrt(5)+1)/2). A63703

Constant term of the reduction (by x²->x+1) of polynomial p(n,x) identified in Comments. A192348

Numbers k that divide the k-th Franel number. A372940

Numbers k not congruent to 0 (mod 3) such that φ(k) + 4 | σ(k). A15806

a(n) = A057118(A080295(n)) = A080300(A080318(n)). Positions of A080318 in A014486. A80320