Properties of the Number 15982

Fifteen Thousand Nine Hundred Eighty-Two

Basics

Value: 15981 → 15982 → 15983

Parity: even

Prime: No

Previous Prime: 15973

Next Prime: 15991

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 61 × 131

Divisors: 1, 2, 61, 122, 131, 262, 7991, 15982

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11111001101110

Octal: 37156

Duodecimal: 92BA

Hexadecimal: 3e6e

Square: 255424324

Square Root: 126.4199351368288

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

Place n points in general position on each side of a square, and join every pair of the 4·n+4 boundary points by a chord; sequence gives number of regions in the resulting planar graph. A367121

Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 414", based on the 5-celled von Neumann neighborhood. A288052

Number of factorizations with 3 levels of parentheses indexed by prime signatures. A050340(A025487). A50341

Triangle read by rows: T(n,k) is the number of specially labeled bicolored nonseparable graphs with k points in one color class and n-k points in the other class. "Special" means there are separate labels 1,2,...,k and 1,2,...,n-k for the two color classes (n >= 2, k = 1,...,n-1). A123301

Table read by antidiagonals: Place k points in general position on each side of a regular n-gon and join every pair of the n*(k+1) boundary points by a chord; T(n,k) (n >= 3, k >= 0) gives number of regions in the resulting planar graph. A366253

a(n) = (11·n+1)*(11·n+10). A1536

Polynomial (1/3)*n³ + (9/2)*n² + (85/6)*n - 2. A73775

Number of nX2 0..1 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order. A222450

Number of n X 3 0..2 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the sum of elements above it, modulo 3. A238807

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 222", based on the 5-celled von Neumann neighborhood. A270940