Properties of the Number -7440

Four Hundred Forty

Basics

Value: -7441 → -7440 → -7439

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ⁴ × 3 × 5 × 31

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1110100010000

Octal: -16420

Duodecimal: -4380

Hexadecimal: -1d10

Square: 55353600

Square Root: 86.2554346113913

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 1/j¹⁰ where j is the elliptic modular invariant (A000521). A289517

Determinants of 5 X 5 matrices consisting of 25 consecutive primes. A118815

Expansion of e.g.f.: x²*G'(x)/G(x)², where G(x) satisfies G(x) = x*(1+log(1+G(x))). A247075

Coefficient of y⁰ in G(x,y)⁴ where G(x,y) = ∑_n=-oo..+oo (1-xⁿ)ⁿ * xⁿ * yⁿ. A263189

Coefficients of polynomials based on the generalized factorial at k=2 (A001147): b(n)=b(n-1+k; a(n)=b(n)*a(n-1); p(x,n)=If[n == 0, 1, a(n - 1)*(x - a(n - 1))*Product[x + 1/b(i), {i, 1, n - 1}]]. A144457

Total number of possible knight moves on an (n+2) X (n+2) chessboard, if the knight is placed anywhere. A35008

a(n) = 4·n² - 7·n + 4. A54567

Ordered areas of primitive Pythagorean triangles. A24406

Numbers k such that A102489(k) is divisible by k. A32563

a(n) = floor(n*(n-1)*(n-2)/4). A11886