Properties of the Number -1288

Two Hundred Eighty-Eight

Basics

Value: -1289 → -1288 → -1287

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 7 × 23

Divisors: 1, 2, 4, 7, 8, 14, 23, 28, 46, 56

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

Today's Target

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Representations

Binary: -10100001000

Octal: -2410

Duodecimal: -8B4

Hexadecimal: -508

Square: 1658944

Square Root: 35.888716889852724

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

Glaisher's chi₄(n). A30212

G.f. ∑_n=-oo..+oo (xⁿ - x)ⁿ⁺¹. A378582

Expansion of ∏_m>=1 (1+m·q^m)^-14. A22706

McKay-Thompson series of class 27d for Monster. A58604

a(n) = A122192(n)/6. A123013

Triangle T(n,k) read by rows: coefficient [x^n-k] of the characteristic polynomial of the n X n matrix A(r,c)=1 (if c > r) and A(r,c)=c (if c <= r). A158359

Numerator of Bernoulli(n, -7/9). A158970

Array of coefficients of polynomials providing the third term of the numerator of the generating function for odd powers (2·m+1) of Chebyshev S-polynomials. The present polynomials are called P(m;2,x²), m >= 2. A217479

Alternating sum of 9-gonal (or nonagonal) numbers. A266086

Expansion of e.g.f.: exp(sin(x)-arctan(x))=1+1/3!*x³-23/5!*x⁵+10/6!*x⁶+719/7!*x⁷... A13360