Properties of the Number 18278

Eighteen Thousand Two Hundred Seventy-Eight

Basics

Value: 18277 → 18278 → 18279

Parity: even

Prime: No

Previous Prime: 18269

Next Prime: 18287

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 13 × 19 × 37

Divisors: 1, 2, 13, 19, 26, 37, 38, 74, 247, 481

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011101100110

Octal: 43546

Duodecimal: A6B2

Hexadecimal: 4766

Square: 334085284

Square Root: 135.19615379144483

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) = 2·binomial(n,3). A7290

Number of 8-ary trees with n vertices. A7556

a(n) = n³ + n² + n. A27444

Molien series for cyclic group of order 5. A8646

Number of distinct terms in row n of Stern's diatomic array, A049456. A293160

a(n) = floor(C(n,4)/5). A11795

a(n) = binomial(5*(n+1),4)/5, with n >= 0. A234043

a(n) = binomial(n+4,4)*gcd(n,5)/5. A234042

Duplicate of A293160. A294443

a(n) = T(n,5), array T as in A051168; a count of Lyndon words; aperiodic necklaces with 5 black beads and n-5 white beads. A51170