1,998,902

2 × 999451

1,998,902 factors as 2 × 999451. Its 4 positive divisors give a proper-divisor sum of 999,454, so this integer is deficient. The Collatz stopping time is 215 steps.

Prime Factor Structure

Factorization String 2 × 999451

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,998,356

Proper Divisor Sum 999,454

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #1998881 ← → #1998917

Radix Representation

Decimal	1998902
Binary	111101000000000110110 (21 bits)
Octal	0o7500066
Hexadecimal	0x1E8036

Divisor Catalog (4)

1 2 999,451 1,998,902

Collatz Trajectory (215 steps to reach 1)

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

1,998,902 999,451 2,998,354 1,499,177 4,497,532 2,248,766 1,124,383 3,373,150 1,686,575 5,059,726 2,529,863 7,589,590 3,794,795 11,384,386 5,692,193 17,076,580 8,538,290 4,269,145 12,807,436 6,403,718 3,201,859 9,605,578 4,802,789 14,408,368 7,204,184 3,602,092 1,801,046 900,523 2,701,570 1,350,785 4,052,356 2,026,178 1,013,089 3,039,268 1,519,634 759,817 2,279,452 1,139,726 569,863 1,709,590 854,795 2,564,386 1,282,193 3,846,580 1,923,290 961,645 2,884,936 1,442,468 721,234 360,617 1,081,852 540,926 270,463 811,390 405,695 1,217,086 608,543 1,825,630 912,815 2,738,446

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