Properties of the Number 28628

Twenty-Eight Thousand Six Hundred Twenty-Eight

Basics

Value: 28627 → 28628 → 28629

Parity: even

Prime: No

Previous Prime: 28627

Next Prime: 28631

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 17 × 421

Divisors: 1, 2, 4, 17, 34, 68, 421, 842, 1684, 7157

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111111010100

Octal: 67724

Duodecimal: 14698

Hexadecimal: 6fd4

Square: 819562384

Square Root: 169.19810873647495

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

Partial sums of the partition numbers A000041 of the positive integers. A26905

Number of integer partitions of n having a unique part of least multiplicity. A362610

Bitwise XOR of trajectories of rule 30 and rule 124, when both are started from a lone 1 cell: a(n) = A110240(n) XOR A267357(n). A328103

T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors. A186484

Expansion of cos(log(1+x)/cos(x)). A9032

a(n) = ((n+1)-st Fibonacci number) - (n-th non-Fibonacci number). A14241

Expansion of x*(1+2·x+8·x²+4·x³+3·x⁴) / ( (1+x)²*(x-1)⁴ ). A178947

T(n,m)=Number of (n+1)X3 0..m arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors. A190023

Number of simple labeled graphs on n nodes that contain some size k connected component, all of whose nodes are labeled with integers {1,2,...,k} for some k in {1,2,...,n}. A237195

Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000101. A259768