Properties of the Number 47940

Forty-Seven Thousand Nine Hundred Forty

Basics

Value: 47939 → 47940 → 47941

Parity: even

Prime: No

Previous Prime: 47939

Next Prime: 47947

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 5 × 17 × 47

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 17

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011101101000100

Octal: 135504

Duodecimal: 238B0

Hexadecimal: bb44

Square: 2298243600

Square Root: 218.95204954510018

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

The binary encoding (as a rooted planar tree) of each rooted planar binary tree. See A057123 for illustration. A57122

Numbers k such that σ(k+1) divides σ(k), where σ(k) is the sum of positive divisors of k. A58073

Expansion of ∏_k>=1 (1 + (k-1)*x^k). A267007

Iterative "rewrite" sequence of binary plane trees. A57119

(1,3) entry of powers of the orthogonal design shown in A090592. A89181

Numbers k such that σ(k) = 3*σ(k+1). A217791

Magic sums of 4 X 4 magic squares composed of odd squares. A271582

Number of words of length n, over the alphabet {a,b,c}, which have an odd number of a's and the number of b's plus the number of c's is less than or equal to 3. A342159

Numbers k such that σ(k) = 2*σ(k+1). A163193

Number of 5-colorings of an n X n grid, up to rotational symmetry. A47940