Properties of the Number 13220

Thirteen Thousand Two Hundred Twenty

Basics

Value: 13219 → 13220 → 13221

Parity: even

Prime: No

Previous Prime: 13219

Next Prime: 13229

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 5 × 661

Divisors: 1, 2, 4, 5, 10, 20, 661, 1322, 2644, 3305

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001110100100

Octal: 31644

Duodecimal: 7798

Hexadecimal: 33a4

Square: 174768400

Square Root: 114.97825881443848

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

Numbers k such that k²⁵⁶ + 1 is prime. A56995

Numbers n such that Bernoulli number B_n has denominator 330. A272183

Number of 4-dimensional partitions of n. A334

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal. A232406

Total number of parts coprime to n in the partitions of n into 9 parts. A363327

Numbers k such that k concatenated with k+8 gives the product of two numbers which differ by 7. A116215

Number of partitions p of n such that median(p) <= mean(p). A240218

Numbers k such that k concatenated with itself gives the product of two numbers which differ by 9. A116162

Number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 1", based on the 5-celled von Neumann neighborhood. A269906

Number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 221", based on the 5-celled von Neumann neighborhood. A270934