1,998,388

2² × 7 × 149 × 479

1,998,388 factors as 2^2 × 7 × 149 × 479. Its 24 positive divisors give a proper-divisor sum of 2,033,612, so this integer is abundant. The Collatz stopping time is 184 steps.

Prime Factor Structure

Factorization String 2^2 × 7 × 149 × 479

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 4,032,000

Proper Divisor Sum 2,033,612

Digit Sum / Digital Root 46 (Root: 1)

Adjacent Primes #1998379 ← → #1998397

Radix Representation

Decimal	1998388
Binary	111100111111000110100 (21 bits)
Octal	0o7477064
Hexadecimal	0x1E7E34

Divisor Catalog (24)

Collatz Trajectory (184 steps to reach 1)

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

1,998,388 999,194 499,597 1,498,792 749,396 374,698 187,349 562,048 281,024 140,512 70,256 35,128 17,564 8,782 4,391 13,174 6,587 19,762 9,881 29,644 14,822 7,411 22,234 11,117 33,352 16,676 8,338 4,169 12,508 6,254 3,127 9,382 4,691 14,074 7,037 21,112 10,556 5,278 2,639 7,918 3,959 11,878 5,939 17,818 8,909 26,728 13,364 6,682 3,341 10,024 5,012 2,506 1,253 3,760 1,880 940 470 235 706 353

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