Properties of the Number -3840

Eight Hundred Forty

Basics

Value: -3841 → -3840 → -3839

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ⁸ × 3 × 5

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: -111100000000

Octal: -7400

Duodecimal: -2280

Hexadecimal: -f00

Square: 14745600

Square Root: 61.96773353931867

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

Signed double Pochhammer triangle: expansion of x(x-2)(x-4)..(x-2n+2). A39683

Triangle of coefficients of a version of the Hermite polynomials defined by P(x, n) = x·P(x, n - 1) - n·P(x, n - 2). A137286

Expansion of theta₄(q)²*theta₄(q²)⁴ in powers of q. A120030

Irregular triangle read by rows: T(n,m) = coefficients in power/Fourier series expansion of an arbitrary anharmonic oscillator's exact differential precession. A276817

a(n) = 2ⁿ-n⁴. A24014

a(n) = 4ⁿ - n⁶. A24042

A076341(A000290(n)), imaginary part of squares mapped as defined in A076340, A076341. A76350

Expansion of (η(q²)⁹ / (η(q)² * η(q⁴)⁴))² in powers of q. A138504

Expansion of q^-1/3 * (η(q)⁸ + 32 * η(q⁴)⁸) in powers of q. A153729

a(n) = n⁴ * ∑_d∣n (-1)^{n/d + 1} * μ(d) / d⁴. A338549