Properties of the Number -16800

Sixteen Thousand Eight Hundred

Basics

Value: -16801 → -16800 → -16799

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ⁵ × 3 × 5 ² × 7

Divisors: 1, 2, 3, 4, 5, 6, 7, 8, 10, 12

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -100000110100000

Octal: -40640

Duodecimal: -9880

Hexadecimal: -41a0

Square: 282240000

Square Root: 129.6148139681572

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) = (-1)^n+k*(n+k+1)*binomial(n,k)*binomial(n+k,k) for n >= k >= 0. A331431

Triangle read by rows. G(n, k) an additive decomposition of 2ⁿ*G(n), G(n) the Genocchi numbers. A154344

Matrix inverse of triangle A055134. A55135

The triangular sequence of symmetrical Lah numbers (A111596, A008297) : L(n, m) = (-1)ⁿ* binomial(n,k)*binomial(n-1, k-1)*( (n-k)! + (n-k)*(k-1)! ), with L(0,0) = 2, L(n,0) = L(n,n) = (-1)ⁿ. A156786

A triangular sequence based on concepts of operations on existing sequences: in this case the H(x,n) ( A060821) traditional Hermite is differentiated twice : p(x,n)=-x²*H''(x,n)+H(x,n). A137449

Triangle of numbers T(n,k) = k!*Stirling2(n,k) read by rows (n >= 1, 1 <= k <= n). A19538

Triangle of numbers T(n,k) = k!*Stirling2(n,k) = A000142(k)*A048993(n,k) read by rows, T(n, k) for 0 <= k <= n. A131689

Expansion of 1/((1+x)*(1-x)⁵). A1752

Table T(n,k) by antidiagonals. T(n,k) is the number of length n primitive (=aperiodic or period n) k-ary words (n,k >= 1). A143324

a(n) = ∏_k=1..n binomial(2·k,k). A7685