Properties of the Number 47440

Forty-Seven Thousand Four Hundred Forty

Basics

Value: 47439 → 47440 → 47441

Parity: even

Prime: No

Previous Prime: 47431

Next Prime: 47441

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 5 × 593

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1011100101010000

Octal: 134520

Duodecimal: 23554

Hexadecimal: b950

Square: 2250553600

Square Root: 217.8072542409917

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..1 arrays with every element unequal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero. A304704

Expansion of (1/x) * Series_Reversion( x*(1+x-x³)/(1+x) ). A366071

Quotient of 'base-3' division described in A032537. A32538

p-INVERT of (0,1,0,1,0,1,...), where p(S) = 1 - 3 S + S². A291243

Number of (n+2)X(5+2) 0..1 arrays with no 3x3 subblock diagonal sum 3 and no antidiagonal sum 3 and no row sum 0 and no column sum 0. A256745

Number of (n+2)X(6+2) 0..1 arrays with no 3x3 subblock diagonal sum 3 and no antidiagonal sum 3 and no row sum 0 and no column sum 0. A256746

Number of nX6 0..1 arrays with every element unequal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero. A304702

Number of n X n 0..1 arrays with every element unequal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero. A304698

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 3 and no antidiagonal sum 3 and no row sum 0 and no column sum 0. A256748

Numbers that are congruent to {2, 5, 6} mod 8. A47440