Properties of the Number 44005

Forty-Four Thousand Five

Basics

Value: 44004 → 44005 → 44006

Parity: odd

Prime: No

Previous Prime: 43997

Next Prime: 44017

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 5 × 13 × 677

Divisors: 1, 5, 13, 65, 677, 3385, 8801, 44005

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010101111100101

Octal: 125745

Duodecimal: 21571

Hexadecimal: abe5

Square: 1936440025

Square Root: 209.77368757782756

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

Number of slanted 2 X n (i=1..2) X (j=i..n+i-1) 1..4 arrays with all 1s connected, all 2s connected, all 3s connected, all 4s connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, 4 in the lower right corner, and with no element having more than 3 neighbors with the same value. A165394

Number of ways to arrange 6 nonattacking knights on the lower triangle of an n X n board. A194490

T(n,k)=Number of ways to arrange k nonattacking knights on the lower triangle of an n X n board. A194492

Numbers k such that 1 and 2 occur juxtaposed in the base-10 representation of k but not of k+1. A44005

Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 4 6 or 7. A252553

Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 5 6 or 7. A252569