Properties of the Number 38821

Thirty-Eight Thousand Eight Hundred Twenty-One

Basics

Value: 38820 → 38821 → 38822

Parity: odd

Prime: Yes

Previous Prime: 38803

Next Prime: 38833

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 38821

Divisors: 1, 38821

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001011110100101

Octal: 113645

Duodecimal: 1A571

Hexadecimal: 97a5

Square: 1507070041

Square Root: 197.03045449879062

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

Let b(1)=1, b(2)=2, b(n) = sum of digits of b(1)+b(2)+b(3)+...+b(n-1), sequence gives values of n such that b(n)=3. A84229

Primes of the form k² + 12. A138368

Primes of the form 2·n²+30·n+13. A243889

The number of partitions of n which represent Chomp positions with Sprague-Grundy value 9. A284782

Primes for which A117078(n) is equal to A117563(n) and A117563(n) is different from 0. A121155

Primes p such that p⁴ - p +/- 1 are twin primes. A236952

Number of (n+1) X (6+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction. A250727

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 425", based on the 5-celled von Neumann neighborhood. A272091

Number of primes less than n·10¹². A38821

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction. A250729