Properties of the Number 30904

Thirty Thousand Nine Hundred Four

Basics

Value: 30903 → 30904 → 30905

Parity: even

Prime: No

Previous Prime: 30893

Next Prime: 30911

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 3863

Divisors: 1, 2, 4, 8, 3863, 7726, 15452, 30904

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100010111000

Octal: 74270

Duodecimal: 15A74

Hexadecimal: 78b8

Square: 955057216

Square Root: 175.79533554676587

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

a(n) is the number of normal generalized Young tableaux of size n with all rows and columns weakly increasing and all regions skew partitions. A299926

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having the same number of equal edges as its horizontal or vertical neighbors, and new values 0..3 introduced in row major order. A205352

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 2 or 3 horizontally or vertically adjacent elements, with upper left element zero. A301608

Number of quasi-tetrominoes in an n X n bounding box. A94171

A generalized Engel expansion of 1/π. A232328

Number of 3-step knight's tours on an (n+2) X (n+2) board summed over all starting positions. A186852

Expansion of e.g.f.: tan(log(1+sin(x))). A9637

Number of (n+1)X3 0..3 arrays with no 2X2 subblock having the same number of equal edges as its horizontal or vertical neighbors, and new values 0..3 introduced in row major order. A205348

Number of (n+1)X4 0..3 arrays with no 2X2 subblock having the same number of equal edges as its horizontal or vertical neighbors, and new values 0..3 introduced in row major order. A205349

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 393", based on the 5-celled von Neumann neighborhood. A271604