Properties of the Number 12285

Twelve Thousand Two Hundred Eighty-Five

Basics

Value: 12284 → 12285 → 12286

Parity: odd

Prime: No

Previous Prime: 12281

Next Prime: 12289

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 × 7 × 13

Divisors: 1, 3, 5, 7, 9, 13, 15, 21, 27, 35

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111111111101

Octal: 27775

Duodecimal: 7139

Hexadecimal: 2ffd

Square: 150921225

Square Root: 110.83771921146699

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

Amicable numbers. A63990

Smaller of an amicable pair: (a,b) such that σ(a) = σ(b) = a+b, a < b. A2025

Odd abundant numbers (odd numbers m whose sum of divisors exceeds 2m). A5231

Amicable pairs. A259180

The non-repetitive Kaprekar binary numbers in decimal. A163205

G.f.: (x+2)*(x+1)/((x-1)*(x-2)) = ∑_n>=0 a(n)*(x/2)ⁿ. A68156

New record highs reached in A060030. A60482

a(n) = a(n-1) + 2·a(n-2) - 2·a(n-3). A136252

a(2·k) = 3·2^k - 3, a(2·k+1) = 2^k+2 - 3. A354788

Smaller member of an infinitary amicable pair. A126169