Properties of the Number -280028

Two Hundred Eighty Thousand Twenty-Eight

Basics

Value: -280029 → -280028 → -280027

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 7 × 73 × 137

Divisors: 1, 2, 4, 7, 14, 28, 73, 137, 146, 274

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -1000100010111011100

Octal: -1042734

Duodecimal: -116078

Hexadecimal: -445dc

Square: 78415680784

Square Root: 529.176719064624

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 place 3 points on a triangular grid of side n so that no three of them are vertices of an equilateral triangle with sides parallel to the grid. A243212

n repeated in decimal representation, but separated by enough zeros that the square has the pattern (n²)(2n²)(n²). A77431