Properties of the Number -145648

One Hundred Forty-Five Thousand Six Hundred Forty-Eight

Basics

Value: -145649 → -145648 → -145647

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 9103

Divisors: 1, 2, 4, 8, 16, 9103, 18206, 36412, 72824, 145648

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100011100011110000

Octal: -434360

Duodecimal: -70354

Hexadecimal: -238f0

Square: 21213339904

Square Root: 381.6385724740098

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 ways to select four points from an n X n grid so that three of them form a triangle of nonzero area and the extra point is strictly inside the triangle. A334712

Number of fixed points in all 132- and 213-avoiding permutations of {1,2,...,n} (these are permutations with runs consisting of consecutive integers). A68018