Properties of the Number 18222

Eighteen Thousand Two Hundred Twenty-Two

Basics

Value: 18221 → 18222 → 18223

Parity: even

Prime: No

Previous Prime: 18217

Next Prime: 18223

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 3037

Divisors: 1, 2, 3, 6, 3037, 6074, 9111, 18222

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011100101110

Octal: 43456

Duodecimal: A666

Hexadecimal: 472e

Square: 332041284

Square Root: 134.98888843160387

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) = prime(prime(prime(prime(A028815(n) - 1) - 1) - 1) - 1) - 1. A141132

Unimodal analog of Fibonacci numbers: a(n+1) = ∑_{k=0..floor(n/2)} A071922(n-k,k). A72176

a(n) = 2025·n² - n. A156855

The number of integers not representable as a sum of n-th powers of primes. A275743

a(n) = 9·n² - 3. A157872

a(n) is the number of edges formed by n-secting the angles of a hexagon. A335735

Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=1, r=4, I={0,2}. A79974

a(n) = prime(prime(prime(prime(n) - 1) - 1) - 1) - 1, where prime(n) is the n-th prime. A141217

Number of nondecreasing integer sequences of length 26 with sum zero and sum of absolute values 2n. A158160

Number of (n+1)X6 0..3 arrays with every 2X2 subblock having nonzero determinant and commuting with every horizontal or vertical neighbor. A206340