Properties of the Number 23816

Twenty-Three Thousand Eight Hundred Sixteen

Basics

Value: 23815 → 23816 → 23817

Parity: even

Prime: No

Previous Prime: 23813

Next Prime: 23819

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 13 × 229

Divisors: 1, 2, 4, 8, 13, 26, 52, 104, 229, 458

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110100001000

Octal: 56410

Duodecimal: 11948

Hexadecimal: 5d08

Square: 567201856

Square Root: 154.3243337908834

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 nX2 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero. A298148

Numbers m such that the GCD of the x's that satisfy σ(x) = m is 3. A241648

a(n) = 8·9ⁿ - 7·8ⁿ. A257289

Expansion of e.g.f. exp(∑_k>=1 x^k² / (k²)!). A329256

Place two n-gons with radii 1 and 2 concentrically, forming an annular area between them. Connect all the vertices with line segments that lie entirely within that area. Then a(n) is the number of edges in that figure. A337702

Triangle T(n,m) read by rows: matrix product A053121·A038207. A96164

Number of (w,x,y) with all terms in {0,...,n} and |w-x|+|x-y|+|y-w| <= w+x+y. A213487

Number of distinct sums i³ + j³ + k³ + l³ for 1<=i<=j<=k<=l<=n. A374714

a(n) = n*(n+1)*(n+2)*(n+3)*(n+4)*(n²+4·n+37)/5040. A257201

a(n) = 4*(n+1)*(9·n+4). A304505