128,404
22 × 47 × 683
Deficient
Even
Composite
Starting at 128,404, the Collatz iteration reaches 1 after 48 steps. The first transition is 64202; the starting value is even with 12 positive divisors.
Prime Factor Structure
Factorization String
2^2 × 47 × 683
Distinct Prime Factors
3
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
12
Divisor Sum (σ)
229,824
Proper Divisor Sum
101,420
Digit Sum / Digital Root
19 (Root: 1)
Adjacent Primes
#128399 ← → #128411
Radix Representation
| Decimal | 128404 |
| Binary | 11111010110010100 (17 bits) |
| Octal | 0o372624 |
| Hexadecimal | 0x1F594 |
Divisor Catalog (12)
Collatz Trajectory (48 steps to reach 1)
Iterative sequence n → n/2 (if even) or 3n+1 (if odd):