Properties of the Number 28574

Twenty-Eight Thousand Five Hundred Seventy-Four

Basics

Value: 28573 → 28574 → 28575

Parity: even

Prime: No

Previous Prime: 28573

Next Prime: 28579

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 7 × 13 × 157

Divisors: 1, 2, 7, 13, 14, 26, 91, 157, 182, 314

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110111110011110

Octal: 67636

Duodecimal: 14652

Hexadecimal: 6f9e

Square: 816473476

Square Root: 169.03845716285983

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

Numbers k such that (266·10^k + 1)/3 is prime. A269303

Given n colors, sequence gives number of ways to color the vertices of a square such that no edge has the same color on both of its vertices. A91940

Coefficients in q-expansion of (E₂*E₄ - E₆)/720, where E₂, E₄, E₆ are the Eisenstein series shown in A006352, A004009, A013973, respectively. A281372

Expansion of 1/sqrt(1 - 4·x/(1+x)⁴). A361790

Sum of two powers of 13. A72390

Sums of distinct powers of 13. A33049

n-th Fibonacci number minus n-th prime number. A100700

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 26. A31704

a(n) = 169·n² + 13. A158548

a(n) = 169·n² + n. A173275