Properties of the Number 90288

Ninety Thousand Two Hundred Eighty-Eight

Basics

Value: 90287 → 90288 → 90289

Parity: even

Prime: No

Previous Prime: 90281

Next Prime: 90289

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ⁴ × 3 ³ × 11 × 19

Divisors: 1, 2, 3, 4, 6, 8, 9, 11, 12, 16

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110000010110000

Octal: 260260

Duodecimal: 44300

Hexadecimal: 160b0

Square: 8151922944

Square Root: 300.47961661317396

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

Cluster series for site percolation problem on honeycomb matching lattice (honeycomb structure with 1st, 2nd and 3rd neighbors connected). A3200

Numbers m such that m² + (reversal of m)² is a square. (Leading 0's are ignored.) A68536

Numbers with prime factorization pqr^3s^4. A190294

T(n, m) = ∑_k=1..(m+3)/2 C(m-k+2, k-1)*C(n+1, k-1)*C(n-m+k-1, k-1)*C(2·n-2·k+4, 2·m-4·k+5)/(C(2·k-2, k-1)*C(2·m-2·k+4, 2·k-2))/2, triangle read by rows. A338372

Decimal expansion of ∑_k>=1 1/F(k) where F(k) is the k-th Fibonacci number A000045(k). A79586

a(n) = 2·n² + 6·n + 2. A90288

a(n) = ∑_k=0..n binomial(2·n+3·k,n-k). A360144

Number of ways to reciprocally link elements of an nX5 array either to themselves or to exactly two horizontal, diagonal or antidiagonal neighbors. A220722

θ series of (putative) extremal 2-modular even lattice in dimension 88. A34616

Numbers k such that gcd(k², reverse(k²)) = k. A175823