Properties of the Number -344

Three Hundred Forty-Four

Basics

Value: -345 → -344 → -343

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 43

Divisors: 1, 2, 4, 8, 43, 86, 172, 344

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101011000

Octal: -530

Duodecimal: -248

Hexadecimal: -158

Square: 118336

Square Root: 18.547236990991408

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

Alternating sum σ(1)-σ(2)+σ(3)-σ(4)+...+((-1)ⁿ⁺¹)*σ(n). A68762

Expansion of square of continued fraction 1/ ( 1+q/ ( 1+q²/ ( 1+q³/ ( 1+q⁴/... )))). A55101

a(n) = ∑_{k = 0..n} (-1)^k * binomial(n,k) * binomial(2·n,k). A234839

Dirichlet inverse of sigma₃ function (A001158). A53825

T(n, m), numerators of coefficients in a power/Fourier series expansion of the plane pendulum's exact differential time dependence. A274076

∏_k>=1 (1 + x^k)^a(k) = 1 + 2x. A38067

Expansion of 1 / ∑_n=-oo..oo x^n². A4402

Triangle of coefficients T(n,k) in g.f. A(x,y) satisfying ∑_n=-oo..+oo (-1)ⁿ * (xⁿ + y·A(x,y))ⁿ = 1 + (y+2)*∑_n>=1 (-1)ⁿ * x^n², for n >= 1, as read by rows. A370040

Discriminants of quadratic number fields Q(sqrt -n) for n squarefree. A33197

McKay-Thompson series of class 12B for the Monster group with a(0) = 5. A187146