221,290
2 × 5 × 22129
Deficient
Even
Composite
Starting at 221,290, the Collatz iteration reaches 1 after 49 steps. The first transition is 110645; the starting value is even with 8 positive divisors.
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Prime Factor Structure
Factorization String
2 × 5 × 22129
Distinct Prime Factors
3
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
8
Divisor Sum (σ)
398,340
Proper Divisor Sum
177,050
Digit Sum / Digital Root
16 (Root: 7)
Radix Representation
| Decimal | 221290 |
| Binary | 110110000001101010 (18 bits) |
| Octal | 0o660152 |
| Hexadecimal | 0x3606A |
Divisor Catalog (5 of 8)
Collatz Trajectory (49 steps to reach 1)
Iterative sequence n → n/2 (if even) or 3n+1 (if odd):
Showing the first 5 trajectory entries; the stopping-time total above is unchanged.
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