Properties of the Number 26878

Twenty-Six Thousand Eight Hundred Seventy-Eight

Basics

Value: 26877 → 26878 → 26879

Parity: even

Prime: No

Previous Prime: 26863

Next Prime: 26879

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 × 89 × 151

Divisors: 1, 2, 89, 151, 178, 302, 13439, 26878

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110100011111110

Octal: 64376

Duodecimal: 1367A

Hexadecimal: 68fe

Square: 722426884

Square Root: 163.94511276643777

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

a(n) is equal to the rational part (considering of the field Q(sqrt(13))) of the numbers A(n)/sqrt(13), where we have A(n) = ((sqrt(13) - 1)/2)*A(n-1) + A(n-2) + ((3-sqrt(13))/2)*A(n-3), with A(0) = 6, A(1) = sqrt(13) - 1, and A(2) = 11 - sqrt(13). A216486

Numbers n such that the decimal expansions of both n and n² have 2 as smallest digit and 8 as largest digit. A257368

Number of equivalence classes of compositions of n where two compositions a,b are considered equivalent if the summands of a can be permuted into the summands of b with an even number of transpositions. A218004

4-step Fibonacci sequence starting with 1,1,0,0. A251703

a(n) = a(n-1) + a(n-4); first four terms are 0,1,2,3. A78467

Numbers k such that k and k² use only the digits 2, 4, 6, 7 and 8. A137101

Numbers whose base-5 representation contains exactly three 0's and three 3's. A45202

Number of nX4 0..1 arrays with every element equal to 2, 3, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A301396

a(n) = T(2n+1,n+3), T given by A026758. A26878

Expansion of 1/(1 - x·A001764(x/(1-x))/(1-x)). A186185