Properties of the Number 12486

Twelve Thousand Four Hundred Eighty-Six

Basics

Value: 12485 → 12486 → 12487

Parity: even

Prime: No

Previous Prime: 12479

Next Prime: 12487

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 2081

Divisors: 1, 2, 3, 6, 2081, 4162, 6243, 12486

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000011000110

Octal: 30306

Duodecimal: 7286

Hexadecimal: 30c6

Square: 155900196

Square Root: 111.74077143102244

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

Number of unlabeled rooted trees with n nodes (or connected functions with a fixed point). A81

Number of distinct values taken by 10¹⁰^...¹⁰ (with n 10's and parentheses inserted in all possible ways). A145550

Triangle T(n,k), n >= 1, 1 <= k <= n, read by rows, where sequence a_k of column k has a_k(0)=0, followed by (k+1)-fold 1 and a_k(n) shifts k places left under Euler transform. A144018

INVERTi transform of A000081 = [1, 2, 4, 9, 20, 48, 115, 286, 719, 1842, 4766, 12486,...]. A51573

Fourth powers (n·n * n·n) in carryless arithmetic mod 10. A169886

Expansion of χ(x) / φ(x²) in powers of·where φ(), χ() are Ramanujan θ functions. A85261

Number of stacks of length 1 in all 2ndary structures of size n. A202839

Number of trivially-perfect graphs on n nodes. A123467

Number of paths of length n+2 originating at an interior vertex of 4 X 4 Boggle board. A63002

a(n) = smallest k such that the digit sum of 8k is n. A77495