Properties of the Number -3220

Two Hundred Twenty

Basics

Value: -3221 → -3220 → -3219

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 × 7 × 23

Divisors: 1, 2, 4, 5, 7, 10, 14, 20, 23, 28

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110010010100

Octal: -6224

Duodecimal: -1A44

Hexadecimal: -c94

Square: 10368400

Square Root: 56.74504383644443

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) = BellPolynomial(n, -k). A350263

Expansion of q^-1/3 * (η(q)⁸ + 8 * η(q⁴)⁸) in powers of q². A153728

Sequence is {a(4,n)}, where a(m,n) is defined at sequence A110665. A110669

a(n) = exp(4) * ∑_k>=0 (-4)^k*kⁿ/k!. A309085

Expansion of (φ(q⁴) / φ(q))² in powers of q where φ() is a Ramanujan θ function. A260186

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 299", based on the 5-celled von Neumann neighborhood. A271155

Second 10-gonal (or decagonal) numbers: n*(4·n+3). A33954

Multiples of 20 containing a 20 in their decimal representation. A121040

a(n) is the difference between multiples of 5 with even and odd digit sum in base 4 in interval [0,4ⁿ). A212500

Number of integer partitions of n whose length cannot be written as a nonnegative linear combination of the distinct parts. A367219