Properties of the Number 28478

Twenty-Eight Thousand Four Hundred Seventy-Eight

Basics

Value: 28477 → 28478 → 28479

Parity: even

Prime: No

Previous Prime: 28477

Next Prime: 28493

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 29 × 491

Divisors: 1, 2, 29, 58, 491, 982, 14239, 28478

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111100111110

Octal: 67476

Duodecimal: 14592

Hexadecimal: 6f3e

Square: 810996484

Square Root: 168.75425920550865

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) = -n³ + 7·n² - 5·n + 1. A161708

T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out left turns. A221655

Number of n X 3 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out left turns. A221653

a(n) = ∑_{k=0..floor(n/2)} binomial(2·n+k,n-2·k). A360149

Number of partitions p of n such that 2·min(p) + (number of parts of p) is not a part of p. A238542

Number of perfect matchings in graph C₇ X P_2n. A28478

Maximum value in the n-th row of A354408. A354409