Properties of the Number 30906

Thirty Thousand Nine Hundred Six

Basics

Value: 30905 → 30906 → 30907

Parity: even

Prime: No

Previous Prime: 30893

Next Prime: 30911

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 17 × 101

Divisors: 1, 2, 3, 6, 9, 17, 18, 34, 51, 101

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100010111010

Octal: 74272

Duodecimal: 15A76

Hexadecimal: 78ba

Square: 955180836

Square Root: 175.80102388780332

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

Expansion of x⁴*(2-12·x+24·x²-8·x³-41·x⁴+57·x⁵-16·x⁶)/((1-x)*(1-3·x+x²)*(1-2·x)⁶). A219759

Sum of the fourth largest parts in the partitions of n into 8 parts. A308995

Number of integer-sided hexagons having perimeter n. A124286

Triangle read by rows: T(n,k) is the number of descent sequences of length n with exactly k-1 descents, n>=1, 1<=k<=n. A225624

Position of the circles with center at a lattice point that contain record numbers of lattice points, in the list of Loeschian numbers A003136. A230656

Number of essentially different semi-magic squares of order 3 with semimagic sum n. A122751

Classification of bicyclics with the parameter 'α' having the value of 3. See the paper by Hendrickson and Parks for details. A125672

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 790", based on the 5-celled von Neumann neighborhood. A273562

[ exp(3/16)*n! ]. A30906