Properties of the Number -340

Three Hundred Forty

Basics

Value: -341 → -340 → -339

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 × 17

Divisors: 1, 2, 4, 5, 10, 17, 20, 34, 68, 85

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101010100

Octal: -524

Duodecimal: -244

Hexadecimal: -154

Square: 115600

Square Root: 18.439088914585774

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

Expansion of q^-1/24 (m (1-m) / 16)^1/24 in powers of q, where m = k² is the parameter and q is the nome for Jacobian elliptic functions. A81360

a(n) = -a(n-1) + 2·a(n-2), a(0)=1, a(1)=2. A84247

G.f. A(x,y) satisfies: y = f(x,A(x,y)), where f(x,y) = ∑_n=-oo..oo x^n*(n+1/2) * y^n*(n-1/2) is Ramanujan's θ function. A354649

a(n) = A000728(5·n). A282937

Triangle T(n,k) read by rows: coefficient [x^k] of the polynomial p(n,x) with p(0,x) = 1, p(1,x) = 2 - x, p(2,x) = 1 - 4·x + x² and p(n,x) = (2-x)*p(n-1,x) - p(n-2,x) if n>2. A136674

Expansion of (1-x)/(1+x+2·x²). A78050

McKay-Thompson series of class 18C for the Monster group with a(0) = -3. A123676

McKay-Thompson series of class 18C for the Monster group with a(0) = -2. A215412

G.f.: A(x,q) = sqrt( Q(x,q) / Q(x,-q) ), where Q(x,q) = ∑_n=-oo..+oo (x - qⁿ)ⁿ. A292929

McKay-Thompson series of class 18C for the Monster group with a(0) = 1. A215413