Properties of the Number -1285

Two Hundred Eighty-Five

Basics

Value: -1286 → -1285 → -1284

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 257

Divisors: 1, 5, 257, 1285

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10100000101

Octal: -2405

Duodecimal: -8B1

Hexadecimal: -505

Square: 1651225

Square Root: 35.84689665786984

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

Nearest integer to n²*sin(n). A274087

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 201", based on the 5-celled von Neumann neighborhood. A270723

Moser-de Bruijn sequence: sums of distinct powers of 4. A695

Number of free polyominoes (or square animals) with n cells. A105

Sierpiński's triangle (Pascal's triangle mod 2) converted to decimal. A1317

Sequence and first differences (A030124) together list all positive numbers exactly once. A5228

Number of partitions of n with equal number of even and odd parts. A45931

List of codewords in binary lexicode with Hamming distance 4 written as decimal numbers. A75928

Number of partitions of n into at most 4 parts. A1400

Basis for code in A075928. A75929