Properties of the Number -327680

Three Hundred Twenty-Seven Thousand Six Hundred Eighty

Basics

Value: -327681 → -327680 → -327679

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ¹⁶ × 5

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1010000000000000000

Octal: -1200000

Duodecimal: -139768

Hexadecimal: -50000

Square: 107374182400

Square Root: 572.4334022399462

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

Inverse binomial transform of A166517. A166577

a(n)=(5-(-1)ⁿ-6·n)*2^n-2. A179609

G.f. A(x) satisfies A(x) = ( 1 + 16·x*A(x)*(1 + A(x)) )^1/4. A371990

Expansion of (1+x)/(1-4·x). A3947

a(n) = 5·2ⁿ. A20714

a(n) is the maximal number of a's that can be produced in a blank document with n "keystrokes". A193286

17-almost primes (generalization of semiprimes). A69278

a(n) is the smallest number of divisors of pⁿ - 1 that may possibly occur for arbitrarily large primes p. A309906

Hadamard maximal determinant problem: largest determinant of a (real) {0,1}-matrix of order n. A3432

a(n) = ∑_{d∣n, n/d=1 mod 4} d⁴ - ∑_{d∣n, n/d=3 mod 4} d⁴. A50468