Properties of the Number 16220

Sixteen Thousand Two Hundred Twenty

Basics

Value: 16219 → 16220 → 16221

Parity: even

Prime: No

Previous Prime: 16217

Next Prime: 16223

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5 × 811

Divisors: 1, 2, 4, 5, 10, 20, 811, 1622, 3244, 4055

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11111101011100

Octal: 37534

Duodecimal: 9478

Hexadecimal: 3f5c

Square: 263088400

Square Root: 127.35776379946375

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

Triangle P, read by rows, where column k of P² equals column 0 of P^2k+2 such that column 0 of P² equals column 0 of P shift one place left, with P(0,0)=1. A135880

Triangle read by rows: T(n,k) is the number of permutations of 2 indistinguishable copies of 1..n arranged in a circle with exactly k local maxima. A334778

Bisection of Lucas triangle A060922: odd-indexed members of column sequences of A060922 (not counting leading zeros). A60924

Number of permutations of 2 indistinguishable copies of 1..n arranged in a circle with exactly 2 local maxima. A159716

Array read by antidiagonals: T(n,k) is the number of permutations of k indistinguishable copies of 1..n arranged in a circle with exactly 2 local maxima. A334772

Column 1 of triangle A135880. A135882

Triangle, read by rows equal to the matrix product P^-1·R, where P = A135880 and R = A135894; P^-1·R equals triangle P shifted right one column. A135898

Number of partitions p of n such that the number of parts having multiplicity 1 is not a part and max(p) - min(p) is not a part. A241450

Third convolution of Lucas numbers A000032(n+1), n >= 0. A60930

Triangle, read by rows, equal to R², the matrix square of R = A135894. A135895