Properties of the Number 28519

Twenty-Eight Thousand Five Hundred Nineteen

Basics

Value: 28518 → 28519 → 28520

Parity: odd

Prime: No

Previous Prime: 28517

Next Prime: 28537

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 19 ² × 79

Divisors: 1, 19, 79, 361, 1501, 28519

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111101100111

Octal: 67547

Duodecimal: 14607

Hexadecimal: 6f67

Square: 813333361

Square Root: 168.87569392899618

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) = |1³ - 2³ + 3³ - 4³ + ... + (-1)ⁿ⁺¹*n³|. A11934

The reversing binary representation of the sum of the divisors of the n-th odd square: a(n) = A065621(A379223(n)). A379224

a(n) = A077696(n+1)/A077696(n). A77697

Triangle, read by rows, where row n lists coefficients of q in F(n,q) that satisfies: F(n,q) = ∑_k=0..n-1 C(n-1,k)*F(k,q)*F(n-k-1,q)*q^k for n>0, with F(0,q) = 1. A126470

Numbers (excluding primes and powers of primes) such that the square mean of their prime factors is an integer (where the square mean of c and d is sqrt((c²+d²)/2)). A134603

a(n) = ∑_k=0..n 3^{n - k}*Pochhammer(k/3, n - k). Row sums of A371077. A371079

Number of 4 X n 0..1 arrays with every element equal to 0, 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302268

Character of extremal vertex operator algebra of rank 40. A28519