Properties of the Number 12798

Twelve Thousand Seven Hundred Ninety-Eight

Basics

Value: 12797 → 12798 → 12799

Parity: even

Prime: No

Previous Prime: 12791

Next Prime: 12799

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ⁴ × 79

Divisors: 1, 2, 3, 6, 9, 18, 27, 54, 79, 81

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000111111110

Octal: 30776

Duodecimal: 74A6

Hexadecimal: 31fe

Square: 163788804

Square Root: 113.12824580978881

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 "reo" 3D uniform tiling. A299279

Vampire numbers: (definition 1): n has a nontrivial factorization using n's digits. A20342

Triangle read by rows: T(n,k) = number of n X n binary matrices with k pairwise nonadjacent 1's, n >= 0, k = 0..n². A232833

Numbers k such that k!!!!!! + 1 is prime. A85150

Sum of the seventh largest parts in the partitions of n into 8 parts. A308991

Number of subsets of {1, ..., n} that are neither double-free nor sum-free. A88812

6 times octagonal numbers: a(n) = 6·n*(3·n-2). A153796

Number of ways to place 7 nonattacking wazirs on an n X n board. A201507

a(n) = ∑_k=1..n k²*σ(k), where σ is A000203. A319086

Partial sums of A048995. A174514