209,815
5 × 29 × 1447
Deficient
Odd
Composite
Starting at 209,815, the Collatz iteration reaches 1 after 142 steps. The first transition is 629446; the starting value is odd with 8 positive divisors.
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Prime Factor Structure
Factorization String
5 × 29 × 1447
Distinct Prime Factors
3
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
8
Divisor Sum (σ)
260,640
Proper Divisor Sum
50,825
Digit Sum / Digital Root
25 (Root: 7)
Radix Representation
| Decimal | 209815 |
| Binary | 110011001110010111 (18 bits) |
| Octal | 0o631627 |
| Hexadecimal | 0x33397 |
Divisor Catalog (5 of 8)
Collatz Trajectory (142 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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