Properties of the Number 9810

Nine Thousand Eight Hundred Ten

Basics

Value: 9809 → 9810 → 9811

Parity: even

Prime: No

Previous Prime: 9803

Next Prime: 9811

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 × 109

Divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011001010010

Octal: 23122

Duodecimal: 5816

Hexadecimal: 2652

Square: 96236100

Square Root: 99.04544411531506

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 primes of the form 30k + 11 less than 10ⁿ. A91167

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero. A304704

Arrange digits of squares in descending order. A28908

Expansion of (1 + x)*(1 - x + x²)/((1 - x)⁴*(1 + x + x²)). A70333

a(n) = 81·n² + 9. A157888

Number of 4-cycles in the Lucas cube λ(n). A245961

Numbers k such that k*((2⁶¹-1)²) - 1 and k*((2⁶¹-1)²) + 1 are twin primes. A99229

a(n) = 121·n² + n. A173267

Coefficients of a generalized Jaco-Lucas polynomial (odd indices) read by rows. A200073

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 22. A31700