Properties of the Number 12506

Twelve Thousand Five Hundred Six

Basics

Value: 12505 → 12506 → 12507

Parity: even

Prime: No

Previous Prime: 12503

Next Prime: 12511

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 13 ² × 37

Divisors: 1, 2, 13, 26, 37, 74, 169, 338, 481, 962

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 11000011011010

Octal: 30332

Duodecimal: 72A2

Hexadecimal: 30da

Square: 156400036

Square Root: 111.83022847155415

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 ordered triples of integers from [ 1..n ] with no global factor. A15631

Least k > 0 such that gcd(kⁿ+3, (k+1)ⁿ+3) > 1, or 0 if there is no such k. A255853

Number of narrowly recursively normal integer partitions of n. A332272

Expansion of q^-1/3 * a(q)² * c(q) / 3 in powers of q where a(), c() are cubic AGM θ functions. A231947

Coefficient of·in the reduction by x² -> x+1 of the polynomial p(n,x) defined at Comments. A192953

Positions of record high water marks in A246024. A246026

Numerators of continued fraction convergents to sqrt(433). A41824

a(n)/n² is the minimal average squared Euclidean distance of n points to their center of gravity among all configurations of n points on the hexagonal lattice. A59518

Number of 3-balanced strings of length n: let d(S)= #(1)'s in S - #(0)'s, then S is k-balanced if every substring T has -k<=d(T)<=k; here k=3. A27557

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 8. A31421