Properties of the Number 33818

Thirty-Three Thousand Eight Hundred Eighteen

Basics

Value: 33817 → 33818 → 33819

Parity: even

Prime: No

Previous Prime: 33811

Next Prime: 33827

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 37 × 457

Divisors: 1, 2, 37, 74, 457, 914, 16909, 33818

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1000010000011010

Octal: 102032

Duodecimal: 176A2

Hexadecimal: 841a

Square: 1143657124

Square Root: 183.89671013914307

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 (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 0 1 3 6 or 7. A252157

a(n) = ∑_k=1..n σ( (n/gcd(k,n))⁴ ). A373000

Triangle read by rows: Coefficients of the polynomials N(n, x) * EZ(n, x), where N denote the Narayana polynomials A131198 and EZ the Eulerian zig-zag polynomials A205497. A373431

Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 0 1 3 6 or 7. A252150

Convolution of natural numbers n >= 1 with Lucas numbers L(k) for k >= -2. A33818

Number of nX5 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s. A297541