7,215,664
24 × 29 × 15551
Abundant
Even
Composite
Starting at 7,215,664, the Collatz iteration reaches 1 after 67 steps. The first transition is 3607832; the starting value is even with 20 positive divisors.
Resources
Prime Factor Structure
Factorization String
2^4 × 29 × 15551
Distinct Prime Factors
3
Square Status
No
Abundance Measure
Abundant
Analytical Properties
Total Divisors
20
Divisor Sum (σ)
14,463,360
Proper Divisor Sum
7,247,696
Digit Sum / Digital Root
31 (Root: 4)
Adjacent Primes
#7215661 ← → #7215671
Radix Representation
| Decimal | 7215664 |
| Binary | 11011100001101000110000 (23 bits) |
| Octal | 0o33415060 |
| Hexadecimal | 0x6E1A30 |
Divisor Catalog (5 of 20)
Collatz Trajectory (67 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.