Properties of the Number -16706

Sixteen Thousand Seven Hundred Six

Basics

Value: -16707 → -16706 → -16705

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 8353

Divisors: 1, 2, 8353, 16706

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100000101000010

Octal: -40502

Duodecimal: -9802

Hexadecimal: -4142

Square: 279090436

Square Root: 129.25169244539896

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

Triangle read by rows: T(n,k) is the number of free polyominoes with n cells and length k, n >= 1, k = 1..n. A379624

L.g.f.: log( ∑_k>=0 x^k³ ). A363783

Coordination sequence for root lattice B₃. A22145

Column two-from-center of triangle A059317. A106050

Semiprimes in A054552. A113690

Consider a number of k digits n = d_k*10^k-1 + d_k-1*10^k-2 + … + d₂*10 + d₁. Sequence lists the numbers n such that ∑_i=1..k-1{σ(∑_j=1..i{d_j*10^j-1})} = ∑_i=1..k-1{φ(∑_j=1..i{d_k-j+1*10^i-j})} (see example below). A244068

a(0) = 1, a(n) = 29·n² + 2 for n>0. A10019

Shifts left 2 places under "BHK" (reversible, identity, unlabeled) transform. A32104

Right hand side of Pascal rhombus A059317. A160905

Number of triples (a, b, c) with gcd(a, b, c) = 1 and -n <= a,b,c <= n. A175549