Properties of the Number -26810

Twenty-Six Thousand Eight Hundred Ten

Basics

Value: -26811 → -26810 → -26809

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 7 × 383

Divisors: 1, 2, 5, 7, 10, 14, 35, 70, 383, 766

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110100010111010

Octal: -64272

Duodecimal: -13622

Hexadecimal: -68ba

Square: 718776100

Square Root: 163.73759494996864

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) = (2·n-1)*(5·n²-5·n+2)/2. A63495

Number of ways to write n as an ordered sum of 5 prime powers (including 1). A341134

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero. A305175

Sum of all the middle parts in the partitions of 3n into 3 parts. A236364

G.f.: ∑_k>=1 x^2·k/(1+x^2·k) * ∏_k>=1 1/(1-x^k). A305121

Number of 6-regular bipartitions of n. A328548

a(n) = n*(n+1)*(20·n-17)/6. A172117

a(n) = n*(n + 1)*(n² - n + 3)/6. A257055

47-gonal numbers. A95311

Number of lower triangles of a 3 X 3 0..n array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by two or less. A195249