Properties of the Number -266085

Two Hundred Sixty-Six Thousand Eighty-Five

Basics

Value: -266086 → -266085 → -266084

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁶ × 5 × 73

Divisors: 1, 3, 5, 9, 15, 27, 45, 73, 81, 135

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000000111101100101

Octal: -1007545

Duodecimal: -109B99

Hexadecimal: -40f65

Square: 70801227225

Square Root: 515.8342757126557

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) = n²*(n² + 1)/2. A37270

Number of reversible strings with n beads of 3 colors. A32120

Bending a piece of wire of length n+1 (configurations that can only be brought into coincidence by turning the figure over are counted as different). A1444

a(n) = 3ⁿ*(3ⁿ + 1)/2. A25551

a(n) = sum of numbers from 1 to π(n), where π(n) = A007955(n). A184390

Number of 2 X 2 matrices with all terms in {0,1,...,n} and even trace. A210378

Numbers that have exactly 8 representations as a k-gonal number, P(m,k) = m*((k-2)*m - (k-4))/2, k and m >= 3. A321158

a(n) = (n⁶ + n³)/2. A71232

Row sums of the triangle A045975. A204558

a(n) = n! * ∑_i+2j+3k=n 1/(i!*(2j)!*(3k)!). A94717