Properties of the Number 28578

Twenty-Eight Thousand Five Hundred Seventy-Eight

Basics

Value: 28577 → 28578 → 28579

Parity: even

Prime: No

Previous Prime: 28573

Next Prime: 28579

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 11 × 433

Divisors: 1, 2, 3, 6, 11, 22, 33, 66, 433, 866

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111110100010

Octal: 67642

Duodecimal: 14656

Hexadecimal: 6fa2

Square: 816702084

Square Root: 169.05028837597408

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

Sum of 4th powers of proper divisors of n. A279363

At stage 1, start with a unit square. At each successive stage add 4*(n-1) new squares around outside with edge-to-edge contacts. Sequence gives number of squares (regardless of size) at n-th stage. A56640

Number of nX2 0..2 arrays with every 1 immediately preceded by 0 to the left or above, no 0 immediately preceded by a 0, and every 2 immediately preceded by 0 1 to the left or above. A203175

Antidiagonal sums of the array defined in A385623. A385624

Numbers that can be formed using its own digits in order and only addition and fourth power operators. A195672

Expansion of (theta₃(z)*theta₃(2z)+theta₂(z)*theta₂(2z))³. A28578