Properties of the Number 23806

Twenty-Three Thousand Eight Hundred Six

Basics

Value: 23805 → 23806 → 23807

Parity: even

Prime: No

Previous Prime: 23801

Next Prime: 23813

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 11903

Divisors: 1, 2, 11903, 23806

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101110011111110

Octal: 56376

Duodecimal: 1193A

Hexadecimal: 5cfe

Square: 566725636

Square Root: 154.29193109168088

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

Centered 23-gonal numbers. A69174

Number of partitions p of n such that median(p) <= multiplicity(min(p)). A240213

Numbers n such that Q(sqrt(n)) has class number 9. A218041

L.g.f.: -log(1 - ∑_n>=1 x^n*(n+1/2)) = ∑_n>=1 a(n)*xⁿ/n. A224678

Becomes prime or 4 after exactly 9 iterations of f(x) = sum of prime factors of x. A48131

Number of -3..3 arrays x(i) of n+1 elements i=1..n+1 with x(i)+x(j), x(i+1)+x(j+1), -(x(i)+x(j+1)), and -(x(i+1)+x(j)) having two or three distinct values for every i<=n and j<=n. A211500

Semiprimes of the form 5·n² + 1. A212707

Smallest number·such that σ(x) = σ(x(n)), where x(n) is the n-th arithmetic derivatives of·and·is not equal to x(n). A246774

Xenodromes: all digits in base 12 are different. A23806

Number of n X 4 0..1 arrays with every element unequal to 0, 2, 3 or 5 king-move adjacent elements, with upper left element zero. A304006