Properties of the Number -1266

Two Hundred Sixty-Six

Basics

Value: -1267 → -1266 → -1265

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 211

Divisors: 1, 2, 3, 6, 211, 422, 633, 1266

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -10011110010

Octal: -2362

Duodecimal: -896

Hexadecimal: -4f2

Square: 1602756

Square Root: 35.58089374931439

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

B(n,k) an additive decomposition of (4ⁿ-2ⁿ)*B(n), B(n) the Bernoulli numbers (triangle read by rows). A154345

McKay-Thompson series of class 30C for the Monster group with a(0) = -1. A132321

McKay-Thompson series of class 30C for Monster. A58614

Expansion of (1-x)^-1/(1+x+x²-x³). A77908

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f.: ∏_j>0 (1-j^k*x^j)^1/j. A294616

a(n) is the coefficient of the term a^-n in the asymptotic series for the least positive zero of the generalized Rogers-Ramanujan continued fraction. A50203

Expansion of 1 / ((1-x)*(1-x+x²+x³)). A77872

Number of rooted trees with n vertices in which vertices at the same level have the same degree. A3238

Centered pentagonal numbers: (5n²+5n+2)/2; crystal ball sequence for 3.3.3.4.4. planar net. A5891

Numbers which are the sum of 3 nonzero 4th powers. A3337