Properties of the Number 30805

Thirty Thousand Eight Hundred Five

Basics

Value: 30804 → 30805 → 30806

Parity: odd

Prime: No

Previous Prime: 30803

Next Prime: 30809

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 61 × 101

Divisors: 1, 5, 61, 101, 305, 505, 6161, 30805

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100001010101

Octal: 74125

Duodecimal: 159B1

Hexadecimal: 7855

Square: 948948025

Square Root: 175.5135322418189

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) = (1 + ∑_j=1..K-1 a(n-j) + a(n-1)*a(n-K+1))/a(n-K) with a(1),...,a(K)=1, where K=4. A283329

Denominators of continued fraction convergents to sqrt(493). A41941

a(n) = ∑_d∣n d^d * binomial(n/d-1,d-1). A376018

Numbers n such that 6n and 12n are both the average of twin prime pairs. A177680

Multiplicity of highest weight (or singular) vectors associated with character chi₁₅₂ of Monster module. A34540

Number of nonequivalent proper colorings of the vertices of a 4D hypercube using at most n colors up to rotations and reflections of the cube. A334357

a(n) = floor(exp(5/24)*n!). A30805