Properties of the Number -105987

One Hundred Five Thousand Nine Hundred Eighty-Seven

Basics

Value: -105988 → -105987 → -105986

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 ³ × 103

Divisors: 1, 3, 7, 21, 49, 103, 147, 309, 343, 721

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11001111000000011

Octal: -317003

Duodecimal: -51403

Hexadecimal: -19e03

Square: 11233244169

Square Root: 325.5564467185376

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 different ways to select n elements from three sets of n elements such that there is at least one element from each set. A115246

Triangle T(n,m) for the number of ways to put n stones into an m X n square grid such that each of the m rows contains at least one stone. A259051

Number of idempotent 3X3 -n..n matrices of rank 2. A223452

"DIJ" (bracelet, indistinct, labeled) transform of 3,3,3,3,... A32268

a(n) = binomial(3·prime(n), prime(n)) - 3·binomial(2·prime(n), prime(n)) + 3. A272630