Properties of the Number 65428

Sixty-Five Thousand Four Hundred Twenty-Eight

Basics

Value: 65427 → 65428 → 65429

Parity: even

Prime: No

Previous Prime: 65423

Next Prime: 65437

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 11 × 1487

Divisors: 1, 2, 4, 11, 22, 44, 1487, 2974, 5948, 16357

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1111111110010100

Octal: 177624

Duodecimal: 31A44

Hexadecimal: ff94

Square: 4280823184

Square Root: 255.78897552474774

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

Smallest number that is the largest value in the Collatz (3x + 1) trajectories of exactly n initial values. (a(n)=0 if no such number exists.) A233293

Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 249", based on the 5-celled von Neumann neighborhood. A287139

Triangle read by rows: T(n,k) is the number of L-convex polyominoes of semiperimeter n, having k maximal rectangles (n >= 2, 1 <= k <= floor(n/2)). An L-convex polyomino is a convex polyomino in which any two cells can be connected by a path internal to the polyomino and which has at most 1 change of direction (i.e., one of the four orientations of the letter L). A maximal rectangle in an L-convex polyomino P is a rectangle included in P that is maximal with respect to inclusion. A181368

Numbers k such that no x² mod k is prime. A65428