Properties of the Number 28604

Twenty-Eight Thousand Six Hundred Four

Basics

Value: 28603 → 28604 → 28605

Parity: even

Prime: No

Previous Prime: 28603

Next Prime: 28607

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 7151

Divisors: 1, 2, 4, 7151, 14302, 28604

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111110111100

Octal: 67674

Duodecimal: 14678

Hexadecimal: 6fbc

Square: 818188816

Square Root: 169.12717108732116

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) is the smallest k > a(n-1) such that k² has no digit in common with a(n-1)². A30287

a(n) is such that the a(n)-th composite number is (n-th prime)². A120389

G.f. satisfies: A(x) = ∑_n>=0 n! * xⁿ * A(x)^n*(n-1/2). A219358

Numbers k such that k² contains only digits {1,6,8}. A53908

Result of inserting the integers n = 0, 1, 2, ... in this order into an initially empty list, where n is inserted between the pair of consecutive elements with sum equal to n and minimal absolute difference, or at the end of the list if no such pair exists. A360447

a(n) is the smallest number k such that A073813(k) = prime(n). A73814

Triangle read by rows: numbers of isomers of unbranched a-4-catapolyoctagons. A120649

Smallest number such that there are exactly n numbers between a(n) and a(n+1) with n divisors. A79835

Expansion of (theta₃(z)*theta₃(9z)+theta₂(z)*theta₂(9z))⁴. A28604