Properties of the Number -18216

Eighteen Thousand Two Hundred Sixteen

Basics

Value: -18217 → -18216 → -18215

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ² × 11 × 23

Divisors: 1, 2, 3, 4, 6, 8, 9, 11, 12, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100011100101000

Octal: -43450

Duodecimal: -A660

Hexadecimal: -4728

Square: 331822656

Square Root: 134.9666625504239

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

Alternating sum of centered heptagonal pyramidal numbers. A270694

Number of integer partitions of n that can be partitioned into a set of sets. A382077

E.g.f.: sin(x)/(1+LambertW(-x)). A277461

a(n) = n³ + (n+1)³ + (n+2)³ + (n+3)³. A27603

Number of 5-way intersections in the interior of a regular 6n-gon. A137939

T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or vertical neighbor, without 2-loops or left turns. A221768

Number of binary words w of length n with equal numbers of 010 and 101 subwords such that for every prefix of w the number of occurrences of subword 101 is larger than or equal to the number of occurrences of subword 010. A260697

Numbers k such that k+1 is a prime, k+2 is twice a prime, and k+3 is three times a prime. A278583

Numbers k at which point A336459(k) appears multiplicative, but A051027(k) does not. A336561

Main diagonal of symmetric square table A084867, in which the antidiagonal sums (A006012) form the first row shifted left. A84868