Properties of the Number 6448

Six Thousand Four Hundred Forty-Eight

Basics

Value: 6447 → 6448 → 6449

Parity: even

Prime: No

Previous Prime: 6427

Next Prime: 6449

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 13 × 31

Divisors: 1, 2, 4, 8, 13, 16, 26, 31, 52, 62

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100100110000

Octal: 14460

Duodecimal: 3894

Hexadecimal: 1930

Square: 41576704

Square Root: 80.29943959953893

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

The number of regions formed when every pair of n points, placed at the vertices of a regular n-gon, are connected by a circle and where the points lie at the ends of the circle's diameter. A358782

a(n) = n*(n+1)*(n+8)/6. A6503

Expansion of ((1-x)/(1-2·x))⁴. A62109

T(n,k)=Number of nXk 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,0) and new values introduced in order 0..2. A275228

Expansion of ∏_n>=1 (1 - x^5·n)³⁰/(1 - xⁿ)³¹ in powers of x. A278558

Number of series-reduced labeled trees with n nodes. A5512

G.f.: ∑_n=-oo..+oo n·xⁿ * (1 - xⁿ)ⁿ. A291937

a(n) is the conjectured highest power of n which has no four identical digits in succession. A216065

Numbers which are representable as a sum of thirteen but no fewer consecutive nonnegative integers. A270300

Let G_n denote the planar graph defined in A358746 with the addition, if n is odd, of the circle containing the initial n points; sequence gives the number of regions in G_n. A370976