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Properties of the Number 40816

Forty Thousand Eight Hundred Sixteen

Basics

Value: 40815 → 40816 → 40817

Parity: even

Prime: No

Previous Prime: 40813

Next Prime: 40819

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 4 × 2551

Divisors: 1, 2, 4, 8, 16, 2551, 5102, 10204, 20408, 40816

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001111101110000

Octal: 117560

Duodecimal: 1B754

Hexadecimal: 9f70

Square: 1665945856

Square Root: 202.02970078679024

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

Numbers k such that k and k + 1 are both of the form p·q4 where p and q are distinct primes. A215197
Number of ways two L-tiles can be placed on an n X n square. A243645
Numbers k such that both k and k+1 are not exponentially squarefree numbers. A342188
a(n) is the number of ways to select 3 distinct points forming a triangle of unsigned area = n from a square of grid points with side length n, divided by 4. A320542
Numbers k such that k and k+1 both have the same number of squarefree divisors and powerful divisors. A360904
Number of ways to place n nonattacking nightriders on an n X n cylindrical board. A196814
Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and column sum not 2 4 5 or 7 and every diagonal and antidiagonal sum 2 4 5 or 7. A251871
Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum not 2 4 5 or 7 and every diagonal and antidiagonal sum 2 4 5 or 7. A251875
Number of nX4 0..1 arrays with every repeated value in every row and column greater than the previous repeated value. A267715
Molien series for Hecke group H3,4. A27631