Properties of the Number 12490

Twelve Thousand Four Hundred Ninety

Basics

Value: 12489 → 12490 → 12491

Parity: even

Prime: No

Previous Prime: 12487

Next Prime: 12491

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 1249

Divisors: 1, 2, 5, 10, 1249, 2498, 6245, 12490

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11000011001010

Octal: 30312

Duodecimal: 728A

Hexadecimal: 30ca

Square: 156000100

Square Root: 111.75866856758807

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

a(n) = ∑_j=1..n j·prime(j). A14285

Positions of 2's in A264977; positions of 3's in A277330. A277712

Numerator of the barycenter of first n primes defined as a(n) = numerator(∑_i=1..n (i·prime(i)) / ∑_i=1..n prime(i)). A306834

Stirling transform of the first kind of the Lucas numbers A000032. A213593

Expansion of φ(-x³) * f(-x, -x⁵) / ψ(x) in powers of·where φ(), ψ(), f(, ) are Ramanujan θ functions. A262614

Least positive integer k such that both k and k·n belong to the set {m>0: m+1, m²+1 and m²+prime(m)² are all prime}. A261339

Number of subsets of {1,2,3,...,n} that sum to 0 mod 21. A68042

Numbers k such that average of prime(k) and prime(k+1) is a perfect square. A76692

Right edge of triangular table A138612. A166019

Numbers whose squares have 2R-1 digits, such that the number represented by leftmost R digits and number represented by rightmost R digits divide each other evenly. A216233