Properties of the Number 16945

Sixteen Thousand Nine Hundred Forty-Five

Basics

Value: 16944 → 16945 → 16946

Parity: odd

Prime: No

Previous Prime: 16943

Next Prime: 16963

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 5 × 3389

Divisors: 1, 5, 3389, 16945

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100001000110001

Octal: 41061

Duodecimal: 9981

Hexadecimal: 4231

Square: 287133025

Square Root: 130.17296186228538

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

First column of triangle in A176452. A176485

Expansion of x*(403+2967·x+1047·x²-x³)/(1-x)⁴. A165808

Number of squares on infinite chessboard at <= n knight's moves from a fixed square. A18836

G.f. = continued fraction: A(x)=1/(1-x/(1-2·x²/(1-3·x³/(1-4·x⁴/(...))))). A88357

Number of ways to place 5 nonattacking semi-queens on an n X n board. A202656

Expansion of ∏_k>=1 1/(1 + x^k)^k*(5·k-3/2). A295122

Sizes of successive balls in D₄ lattice. A46949

Numbers k such that the continued fraction for sqrt(k) has period 51. A20390

Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally, vertically and ne-to-sw antidiagonally. A254906

Number of (6+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally, vertically and ne-to-sw antidiagonally. A254912