Properties of the Number 24857

Twenty-Four Thousand Eight Hundred Fifty-Seven

Basics

Value: 24856 → 24857 → 24858

Parity: odd

Prime: No

Previous Prime: 24851

Next Prime: 24859

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 7 × 53 × 67

Divisors: 1, 7, 53, 67, 371, 469, 3551, 24857

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110000100011001

Octal: 60431

Duodecimal: 12475

Hexadecimal: 6119

Square: 617870449

Square Root: 157.66102879278696

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 octahedral numbers (crystal ball sequence for cubic lattice). A1845

Sum of the squares of the quadratic residues of prime(n). A125613

Sum of numerator and denominator in a rational approximation j/k of q = log(2)/log(3), such that q - j/k is a new minimum, i.e., q is approximated from below. A355514

Sum of numerator and denominator in a rational approximation j/k of q = log(2)/log(3), such that abs(j/k - q) is a new minimum. A355513

Number of Dyck n-paths all of whose ascents and descents have lengths equal to 1 (mod 7). A212366

a(n) = prime(x) - π(x) where·is the least·such that (prime(x+1) - π(x+1)) - (prime(x) - π(x)) = n. A111183

Number of (3+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction. A250758

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers), t = (Fibonacci numbers). A24857

Number of nX5 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 2,3,0,1,4 for x=0,1,2,3,4. A196490

a(1) = 1, a(2) = 2; for n > 2, a(n) = smallest positive number which has not appeared that has a common factor with a(n-2)² + a(n-1)². A358444