Properties of the Number -11220

Eleven Thousand Two Hundred Twenty

Basics

Value: -11221 → -11220 → -11219

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 6

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 5 × 11 × 17

Divisors: 1, 2, 3, 4, 5, 6, 10, 11, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10101111010100

Octal: -25724

Duodecimal: -65B0

Hexadecimal: -2bd4

Square: 125888400

Square Root: 105.92450141492289

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

Triangle T(n,k) read by rows: see formula lines for definition. A97474

Table T(r,s) read by rows: the coefficient of [k^s] of the Wynn's r-th converging polynomial p_r(k) of Weber functions, 0<=s<=r. A380169

Numbers that are divisible by exactly 5 different primes. A51270

Longest edge a of smallest (measured by the longest edge) primitive Euler bricks (a, b, c, sqrt(a² + b²), sqrt(b² + c²), sqrt(a² + c²) are integers). A31173

a(n) = a(n-1) + 3·a(n-2) - a(n-4), with a(0)=1, a(1)=1, a(2)=4, a(3)=7. A124400

Numbers k such that k² divides 13^k - 1. A128393

T(n,k) = Number of (n+1) X (k+1) binary arrays with no 2 X 2 subblock sum equal to any horizontal or vertical neighbor 2 X 2 subblock sum. A185798

Expansion of ∏_k>=1 (1 + 4·x^k). A261568

Number of ways to place 2 points on a triangular grid of side n so that they are not adjacent. A239568

Numbers of rank 11 in the poset of lunar numbers. A191753