Properties of the Number 18786

Eighteen Thousand Seven Hundred Eighty-Six

Basics

Value: 18785 → 18786 → 18787

Parity: even

Prime: No

Previous Prime: 18773

Next Prime: 18787

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 31 × 101

Divisors: 1, 2, 3, 6, 31, 62, 93, 101, 186, 202

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100101100010

Octal: 44542

Duodecimal: AA56

Hexadecimal: 4962

Square: 352913796

Square Root: 137.06202975295528

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

Generalized Pascal Triangle - satisfying the same recurrence as Pascal's triangle, but with a(n,0)=1 and a(n,n)=10ⁿ (instead of both being 1). A164844

Numbers that are the sum of six fourth powers in four or more ways. A345561

Numbers that are the sum of six fourth powers in exactly four ways. A345816

Numbers with multiplicative persistence value 6. A46515

Number of partitions of n such that m(greatest part) = m(1), where m = multiplicity. A240078

Sum of the largest parts in the partitions of 3n into 3 parts. A236370

The total number of different isosceles trapezoids, excluding squares, that can be drawn on an n X n square grid where the corners of each individual trapezoid lie on a lattice point. A272459

Number of irredundant sets in the n-Andrásfai graph. A290587

Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,15. A64244

Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,45. A64259