Properties of the Number 80464

Eighty Thousand Four Hundred Sixty-Four

Basics

Value: 80463 → 80464 → 80465

Parity: even

Prime: No

Previous Prime: 80449

Next Prime: 80471

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 47 × 107

Divisors: 1, 2, 4, 8, 16, 47, 94, 107, 188, 214

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011101001010000

Octal: 235120

Duodecimal: 3A694

Hexadecimal: 13a50

Square: 6474455296

Square Root: 283.6617704238624

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

Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of sqrt(2 / ( (1-2*(k+4)*x+((k-4)*x)²) * (1+(k-4)*x+sqrt(1-2*(k+4)*x+((k-4)*x)²)) )). A337369

Triangle T(n, k) = coefficients of p(x, n) where p(x,n) = (x+1)*p(x, n-1) + n*(n-1)*x·p(x, n-2), read by rows. A154986

Number of tilings of a 10 X n rectangle using 2n pentominoes of shape I. A247117

Expansion of sqrt(2 / ( (1-12·x+4·x²) * (1-2·x+sqrt(1-12·x+4·x²)) )). A337370

a(n) = ∑_{k=0..floor(n/2)} (-1)^k * binomial(n,2·k)². A307091

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 37 ones. A31805

E.g.f. A(x) satisfies: A'(x) = 1/(1 - A(A(x)))². A300282

Product of the two numbers formed by alternate digits of n. A80464

Number of arrays of median of three adjacent elements of some length n+2 0..5 array, with no adjacent equal elements in the latter. A229009