Properties of the Number -281384

Two Hundred Eighty-One Thousand Three Hundred Eighty-Four

Basics

Value: -281385 → -281384 → -281383

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 17 × 2069

Divisors: 1, 2, 4, 8, 17, 34, 68, 136, 2069, 4138

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000100101100101000

Octal: -1045450

Duodecimal: -116A08

Hexadecimal: -44b28

Square: 79176955456

Square Root: 530.456407256996

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

Indices i such that 2·A000326(i)+1 is also a pentagonal number. A174685

Number of nonempty subsets of {1,2,...,n} in which exactly 3/4 of the elements are <= (n-4)/2. A48064