Properties of the Number -22144

Twenty-Two Thousand One Hundred Forty-Four

Basics

Value: -22145 → -22144 → -22143

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ⁷ × 173

Divisors: 1, 2, 4, 8, 16, 32, 64, 128, 173, 346

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101011010000000

Octal: -53200

Duodecimal: -10994

Hexadecimal: -5680

Square: 490356736

Square Root: 148.8086019019062

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 Greek-key tours on an n X n board; i.e., self-avoiding walks on n X n grid starting in top left corner. A145157

Number of distinct quadratic residues mod 3ⁿ. A39300

a(0)=4; a(n)=n²+a(n-1) for n>0. A153058

Array read by antidiagonals: T(m,n) is the number of Hamiltonian paths in an m X n grid which start in the top left corner. A378938

Primitive practical numbers of the form 2ⁱ * prime(k). A308710

Coloring a circuit with 4 colors. A6342

Square array: A(row,col) = A003602(A254051(row,col)), read by antidiagonals A(1,1), A(1,2), A(2,1), A(1,3), A(2,2), A(3,1), ... A254055

a(n) = smallest number·such that σ(x) = 2x + 2n. A87998

Numerator of (1+σ(s)) / ((s+1)/2), where s is the square of n prime-shifted once (s = A003961(n)² = A003961(n²)). A337338

Number of Greek-key tours on a 6 X n grid. A160240