Properties of the Number 28246

Twenty-Eight Thousand Two Hundred Forty-Six

Basics

Value: 28245 → 28246 → 28247

Parity: even

Prime: No

Previous Prime: 28229

Next Prime: 28277

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 29 × 487

Divisors: 1, 2, 29, 58, 487, 974, 14123, 28246

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111001010110

Octal: 67126

Duodecimal: 1441A

Hexadecimal: 6e56

Square: 797836516

Square Root: 168.06546343612658

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

T(n,k)=Number of nXk 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors. A208872

T(n,k)=Number of length n+2 0..k arrays with no three equal elements in a row and new values 0..k introduced in 0..k order. A242472

Number of n X 1 0..3 arrays with no occurrence of three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..3 introduced in row major order. A204678

Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 222", based on the 5-celled von Neumann neighborhood. A279986

Fibonacci sequence beginning 1, 28. A22398

Number of n X 2 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors. A208866

Number of 5Xn 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors. A208876

The number of unlabeled trees T on n vertices for which maximum multiplicity attained by any matrix whose graph is T implies the simplicity of its other eigenvalues. A347018

Triangular array a(n,k) = (1/k)*∑_i=0..k (-1)^k-i*binomial(k,i)*iⁿ; n >= 1, 1 <= k <= n, read by rows. A28246

a(n) = ∑_k=0..n C(n,k)* [x^n-k] A(x)^k for n>0, with a(0)=1. A125222