Properties of the Number 30205

Thirty Thousand Two Hundred Five

Basics

Value: 30204 → 30205 → 30206

Parity: odd

Prime: No

Previous Prime: 30203

Next Prime: 30211

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 5 × 7 × 863

Divisors: 1, 5, 7, 35, 863, 4315, 6041, 30205

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111010111111101

Octal: 72775

Duodecimal: 15591

Hexadecimal: 75fd

Square: 912342025

Square Root: 173.79585725787598

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

Numbers n for which there are exactly seven k such that n = k + (product of nonzero digits of k). A96928

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero. A305175

Arithmetic mean of two consecutive prime interprimes of second order: interprimes of third order. A126556

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero. A316763

Number of composites removed in each step of the Sieve of Eratosthenes for 10⁷. A227155

Number of unlabeled rooted trees with n nodes such that the minimal outdegree of inner nodes equals 5. A244459

Numbers n with property that n² contains "1234" as a substring. A175464

Number of nX3 0..1 arrays with every element unequal to 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero. A305170

G.f. satisfies A(x) = exp( ∑_k>=1 A(x^k) * x^k/(k * (1 + x^k)²) ). A363567

Expansion of 1/(1-x-x²-x¹⁰+x¹²). A147659