3,980,420
22 × 5 × 199021
Abundant
Even
Composite
Starting at 3,980,420, the Collatz iteration reaches 1 after 66 steps. The first transition is 1990210; the starting value is even with 12 positive divisors.
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Prime Factor Structure
Factorization String
2^2 × 5 × 199021
Distinct Prime Factors
3
Square Status
No
Abundance Measure
Abundant
Analytical Properties
Total Divisors
12
Divisor Sum (σ)
8,358,924
Proper Divisor Sum
4,378,504
Digit Sum / Digital Root
26 (Root: 8)
Radix Representation
| Decimal | 3980420 |
| Binary | 1111001011110010000100 (22 bits) |
| Octal | 0o17136204 |
| Hexadecimal | 0x3CBC84 |
Divisor Catalog (5 of 12)
Collatz Trajectory (66 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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