Properties of the Number -8487

Four Hundred Eighty-Seven

Basics

Value: -8488 → -8487 → -8486

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 23 × 41

Divisors: 1, 3, 9, 23, 41, 69, 123, 207, 369, 943

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10000100100111

Octal: -20447

Duodecimal: -4AB3

Hexadecimal: -2127

Square: 72029169

Square Root: 92.12491519670452

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) = n*(2 + 5·n). A168668

Triangle of numerators of coefficients of Faulhaber polynomials used for sums of even powers. A93558

T(n,k)=Number of nXk nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 2 and every value increasing by 0 or 1 with every step right, diagonally se or down. A252983

Number of set partitions of [n] such that for each block b the smallest integer interval containing b has at most five elements. A276721

a(n) = 16n² + n. A157474

Number of partitions p of n for which Odd(p) = Odd(p') (mod 4), where p' is the conjugate of p. A97566

Numbers k such that k² + 1 is divisible by precisely five distinct primes where the sum of the largest and the smallest is equal to the sum of the other three. A192771

Number of different closest packings of equal spheres for hexagonal crystals having repeat period n. A371991

Expansion of e.g.f. 1/(1 - 2·arcsinh(x))^1/2. A385371

a(1) = 1, a(n) = digit reversal of n·a(n-1). A96138