Properties of the Number 26668

Twenty-Six Thousand Six Hundred Sixty-Eight

Basics

Value: 26667 → 26668 → 26669

Parity: even

Prime: No

Previous Prime: 26647

Next Prime: 26669

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 59 × 113

Divisors: 1, 2, 4, 59, 113, 118, 226, 236, 452, 6667

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110100000101100

Octal: 64054

Duodecimal: 13524

Hexadecimal: 682c

Square: 711182224

Square Root: 163.30339861742007

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 compositions (ordered partitions) of n into tetrahedral (or triangular pyramidal) numbers (A000292). A282582

a(n) = Sum {k + j·m <= n} (k + j·m), with 0 < k,j,m <= n. A106847

G.f. A(x) satisfies A(x) = 1 + x·A(x)⁴*A(-x). A143549

Expansion of g.f. C(x·C(x)³), where C(x) = 1 + x·C(x)² is the g.f. of the Catalan numbers (A000108). A363308

Eight white queens and one red queen on a 3 X 3 chessboard. G.f.: (1+x)/(1-5·x-2·x²). A180037

Triangle read by rows, 1 <= k <= n: T(n,k) is the number of (unlabeled) connected graphs with n nodes and zero forcing number k. A343648

Indices of primes in sequence defined by A(0) = 29, A(n) = 10·A(n-1) - 81 for n > 0. A101952

Number of "semiperiodic" binary words of length n. A209284

a(n) = prime(n)*(prime(n-1) + prime(n+1)). A357679

Number of nX6 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 4 neighboring 1s. A297580