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Properties of the Number 28446

Twenty-Eight Thousand Four Hundred Forty-Six

Basics

Value: 28445 → 28446 → 28447

Parity: even

Prime: No

Previous Prime: 28439

Next Prime: 28447

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 11 × 431

Divisors: 1, 2, 3, 6, 11, 22, 33, 66, 431, 862

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111100011110

Octal: 67436

Duodecimal: 14566

Hexadecimal: 6f1e

Square: 809174916

Square Root: 168.6594201341864

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

Triangle read by rows: T(n,k) is the number of simple series-parallel matroids on [n] with rank k, 1 <= k <= n. A361355
Number of 0..2 arrays of length n+3 with sum no more than 4 in any length 4 subsequence (=50% duty cycle). A212226
Number of permutations of length n which avoid the patterns 231, 1423, 3214. A116717
Lexicographically earliest sequence of positive integers in which, for all positive k, there are exactly k pairs of consecutive terms whose product is k. A307720
T(n,k)=Number of 0..2 arrays of length n+2·k-1 with sum no more than 2·k in any length 2k subsequence (=50% duty cycle). A212232
Squares visited by a knight on a spirally numbered board, moving always to the lowest available unvisited square, or one step back if no unvisited square is available. A323809
Number of perfect matchings in graph P2n X P2n X P2n. A28446
A self-describing sequence mostly made of 1's and 0's emerging when written in English words (see the Comments section for an explanation). A306559
Lexicographically earliest sequence of terms describing its successive chunks of different digits. A323421