Properties of the Number 81276

Eighty-One Thousand Two Hundred Seventy-Six

Basics

Value: 81275 → 81276 → 81277

Parity: even

Prime: No

Previous Prime: 81239

Next Prime: 81281

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 13 × 521

Divisors: 1, 2, 3, 4, 6, 12, 13, 26, 39, 52

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110101111100

Octal: 236574

Duodecimal: 3B050

Hexadecimal: 13d7c

Square: 6605788176

Square Root: 285.08945964381076

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

Numbers k such that k² is palindromic in base 5. A29988

Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths incorporating each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 5, n >= 2. A214563

Number of 3-covers of an unlabeled n-set. A55195

Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths incorporating each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 7, n >= 2. A214503

Conjectured lower bounds for the Riemann hypothesis function floor(H(k) + exp(H(k))*log(H(k))) - σ(k). A222761

a(n) = A057641(A094348(n)). A181852

Number of distinct products of distinct factorials up to n!. A255937

Floor(n³/8). A81276