Properties of the Number -388

Three Hundred Eighty-Eight

Basics

Value: -389 → -388 → -387

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 97

Divisors: 1, 2, 4, 97, 194, 388

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110000100

Octal: -604

Duodecimal: -284

Hexadecimal: -184

Square: 150544

Square Root: 19.697715603592208

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

a(n) = -2·n² + 12·n - 14. A147973

Nearest integer to n²*sin(n). A274087

Table of the numerators of the fractions of Bernoulli twin numbers and their higher-order differences, read by antidiagonals. A168516

Riordan array ((1+3·x-sqrt(1+2·x+9·x²))/(2·x),(1+3·x-sqrt(1+2·x+9·x²))/2). A125694

Choose smallest m>0 such that the n-th rational prime p ramifies in the imaginary quadratic extension field K = Q(sqrt(-m)); a(n) = discriminant(K). A220861

Expansion of (1-x)^-1/(1+x+x²-x³). A77908

Array read by antidiagonals: numerators of the core of the classical Bernoulli numbers. A240581

A transform of the Catalan numbers. A157125

Coefficient table for sums over product of adjacent Chebyshev S-polynomials. A128497

Coefficients of the mock θ function gammabar(q). A260983