Properties of the Number 18210

Eighteen Thousand Two Hundred Ten

Basics

Value: 18209 → 18210 → 18211

Parity: even

Prime: No

Previous Prime: 18199

Next Prime: 18211

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 607

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 607, 1214

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011100100010

Octal: 43442

Duodecimal: A656

Hexadecimal: 4722

Square: 331604100

Square Root: 134.94443300855357

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

T(n,k)=Number of nXk binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once. A269011

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010101. A260841

Number of n-step self-avoiding walks on the hypertriangular lattice with no non-contiguous adjacencies. A344039

Number of compositions (ordered partitions) of n into at most 5 nonprime parts. A347798

Expansion of g.f. A(x) satisfying A(x)² = A( x²/(1-2·x)³ )/(1-2·x). A375443

a(n) = (5·2ⁿ - 5*(-1)ⁿ - 3·n*(-1)ⁿ) / 9. A172285

a(n) = 81n² - n. A157953

a(n) = 225·n² - 15. A158559

Number of (n+1) X 5 0..3 arrays with every 2 X 2 subblock having nonzero determinant and commuting with every horizontal or vertical neighbor. A206339

Number of length 4 1..(n+2) arrays with no leading partial sum equal to a prime. A254542