Properties of the Number -22187

Twenty-Two Thousand One Hundred Eighty-Seven

Basics

Value: -22188 → -22187 → -22186

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 11 × 2017

Divisors: 1, 11, 2017, 22187

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -101011010101011

Octal: -53253

Duodecimal: -10A0B

Hexadecimal: -56ab

Square: 492262969

Square Root: 148.95301272549005

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

Number of reversible string structures with n beads using a maximum of four different colors. A56323

5-wave sequence. A38201

a(n) = 12·n² - 1. A158463

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. A304767

G.f.: 1/(1 - 3 x - 3 x² + 4 x³ + x⁴ - x⁵). A38342

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 2, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. A316511

Number of nX3 0..1 arrays with every element unequal to 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. A304762

Numbers in A231626 but not in A343302; first of 5 consecutive deficient numbers in arithmetic progression with common difference > 1. A343303

Number of nX7 0..1 arrays with every element unequal to 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. A304766

Number of nX7 0..1 arrays with every element unequal to 2, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. A316510