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Properties of the Number 13228

Thirteen Thousand Two Hundred Twenty-Eight

Basics

Value: 13227 → 13228 → 13229

Parity: even

Prime: No

Previous Prime: 13219

Next Prime: 13229

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 2 × 3307

Divisors: 1, 2, 4, 3307, 6614, 13228

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11001110101100

Octal: 31654

Duodecimal: 77A4

Hexadecimal: 33ac

Square: 174979984

Square Root: 115.013042738639

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 numerator(Bernoulli(2·k)/(2·k)) is different from numerator(Bernoulli(2·k)/(2·k*(2·k-1))). A90495
Number of 4-tournament sequences: a(n) gives the number of increasing sequences of n positive integers (t1,t2,...,tn) such that t1 = 2 and ti = 2 (mod 3) and ti+1 <= 4·ti for 1<i<n. A113098
Square table T, read by antidiagonals, where T(n,k) gives the number of n-th generation descendents of a node labeled (k) in the tree of 4-tournament sequences. A113092
Number of 2 X 2 matrices with all terms in {0,1,...,n} and (sum of terms) = n+2. A210374
T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some king-move neighbor, without move-in move-out straight through or left turns. A221925
Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where A(n,k) = n! * k! * [xn * yk] 1 / ( (1-x) * (1-y) * (1 - log(1-x) * log(1-y)) ). A382823
Triangle T, read by rows, equal to the matrix square of triangle A113095, which satisfies the recurrence: A113095(n,k) = [A1130954](n-1,k-1) + [A1130954](n-1,k). A113097
Consecutive states of the linear congruential pseudo-random number generator (3661·s + 30809) mod 145800 when started at s=1. A385365
Numbers k such that the continued fraction for sqrt(k) has period 92. A20431
Numbers k such that σ(σ(k)) is a Fibonacci number. A280545