Properties of the Number 30398

Thirty Thousand Three Hundred Ninety-Eight

Basics

Value: 30397 → 30398 → 30399

Parity: even

Prime: No

Previous Prime: 30391

Next Prime: 30403

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 15199

Divisors: 1, 2, 15199, 30398

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111011010111110

Octal: 73276

Duodecimal: 15712

Hexadecimal: 76be

Square: 924038404

Square Root: 174.35022225394493

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

Number of subsets of {1, ..., n} that are not sum-free. A88809

Triangle read by rows: row n is the first row of the matrix M[n]^n-1, where M[n] is the n X n tridiagonal matrix with main diagonal (2,4,4,...) and super- and subdiagonals (1,1,1,...). A124575

Expansion of (1 - sqrt((1-2·x)*(1-6·x)))/(2·x*(2-3·x)). A33543

Number of binary strings of length n which have more 01 than 00 substrings. A371564

Fibonacci sequence beginning 13, 11. A206607

Average of 4 primes where the integer Schwarzian derivative is zero. A94903

Riordan array (f(x), x·f(x)) where f(x) is the g.f. of A033543. A171515

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 54", based on the 5-celled von Neumann neighborhood. A270024

a(n) is the number of n-walks between the vertices 1 and 3 of the Graph on the chalkboard in 'Good Will Hunting', (1997). A187734

a(n)=(# 2's)-(# 3's) in first n terms of A030386. A30398