1,990,664

2³ × 13 × 19141

Starting at 1,990,664, the Collatz iteration reaches 1 after 60 steps. The first transition is 995332; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2^3 × 13 × 19141

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 4,019,820

Proper Divisor Sum 2,029,156

Digit Sum / Digital Root 35 (Root: 8)

Adjacent Primes #1990661 ← → #1990679

Radix Representation

Decimal	1990664
Binary	111100110000000001000 (21 bits)
Octal	0o7460010
Hexadecimal	0x1E6008

Divisor Catalog (16)

1 2 4 8 13 26 52 104 19,141 38,282 76,564 153,128 248,833 497,666 995,332 1,990,664

Collatz Trajectory (60 steps to reach 1)

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

1,990,664 995,332 497,666 248,833 746,500 373,250 186,625 559,876 279,938 139,969 419,908 209,954 104,977 314,932 157,466 78,733 236,200 118,100 59,050 29,525 88,576 44,288 22,144 11,072 5,536 2,768 1,384 692 346 173 520 260 130 65 196 98 49 148 74 37 112 56 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2

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