Properties of the Number 12807

Twelve Thousand Eight Hundred Seven

Basics

Value: 12806 → 12807 → 12808

Parity: odd

Prime: No

Previous Prime: 12799

Next Prime: 12809

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 1423

Divisors: 1, 3, 9, 1423, 4269, 12807

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001000000111

Octal: 31007

Duodecimal: 74B3

Hexadecimal: 3207

Square: 164019249

Square Root: 113.16801668316009

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

Coordination sequence for 3D uniform tiling formed by stacking parallel layers of the 3.3.4.3.4 2D tiling (cf. A219529). A299255

Numbers k such that k³ divides 17^k² + 1. A177817

a(n) = C(3,n) δ C(0,n). A147724

7-distance Pell sequence. A237716

Numbers n for which the numbers 6n+1, 3n+2, 6n+7 are all odd composite squarefree numbers, but none are semiprimes. A263510

Number of integer partitions of n whose length is twice their alternating sum. A357709

Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=8, k=-1 and l=-1. A177183

Number of (n+2) X (6+2) 0..3 arrays with every 3 X 3 subblock row and column sum not equal to 0 3 5 6 or 7 and every 3 X 3 diagonal and antidiagonal sum equal to 0 3 5 6 or 7. A252252

Numbers n such that n² divides (17ⁿ + 1). A292392

Number of simple connected graphs on n unlabeled nodes. A1349