1,375,636

2² × 331 × 1039

Starting at 1,375,636, the Collatz iteration reaches 1 after 106 steps. The first transition is 687818; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 331 × 1039

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 2,416,960

Proper Divisor Sum 1,041,324

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #1375609 ← → #1375637

Radix Representation

Decimal	1375636
Binary	101001111110110010100 (21 bits)
Octal	0o5176624
Hexadecimal	0x14FD94

Divisor Catalog (12)

1 2 4 331 662 1,039 1,324 2,078 4,156 343,909 687,818 1,375,636

Collatz Trajectory (106 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

1,375,636 687,818 343,909 1,031,728 515,864 257,932 128,966 64,483 193,450 96,725 290,176 145,088 72,544 36,272 18,136 9,068 4,534 2,267 6,802 3,401 10,204 5,102 2,551 7,654 3,827 11,482 5,741 17,224 8,612 4,306 2,153 6,460 3,230 1,615 4,846 2,423 7,270 3,635 10,906 5,453 16,360 8,180 4,090 2,045 6,136 3,068 1,534 767 2,302 1,151 3,454 1,727 5,182 2,591 7,774 3,887 11,662 5,831 17,494 8,747

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