Properties of the Number 8218

Eight Thousand Two Hundred Eighteen

Basics

Value: 8217 → 8218 → 8219

Parity: even

Prime: No

Previous Prime: 8209

Next Prime: 8219

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 7 × 587

Divisors: 1, 2, 7, 14, 587, 1174, 4109, 8218

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10000000011010

Octal: 20032

Duodecimal: 490A

Hexadecimal: 201a

Square: 67535524

Square Root: 90.65318527222306

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

Number of n-digit reversible primes (or emirps) with distinct digits. A3684

Number of 2 X n 0-1 matrices avoiding simultaneously the right angled numbered polyomino patterns (ranpp) (00;1), (01;0), (10;0) and (01;1). A100314

Expansion of ∏_k>=0 (1 + x^3·k+1)/(1 - x^3·k+1). A261610

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with every 2X2 subblock having one or two 1s. A251326

Positive integers n such that (n+84)³ - n³ is a square. A263949

Records in A210612. A210613

a(0)=0; for n>0, a(n) = ∑_d∣n d·2^n/d. A54598

a(n) = prime(prime(A028815(n) - 1) - 1) - 1. A141136

Number of partitions p of n such that the number of numbers p having multiplicity 1 in p is not a part and the number of numbers having multiplicity > 1 is not a part. A241417

Number of partitions of n into 7 or more distinct parts. A347574