1,987,201

1987201

1,987,201 factors as 1987201. Its 2 positive divisors give a proper-divisor sum of 1, so this integer is deficient. The Collatz stopping time is 215 steps.

Prime Factor Structure

Factorization String 1987201

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 1,987,202

Proper Divisor Sum 1

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #1987189 ← → #1987217

Radix Representation

Decimal	1987201
Binary	111100101001010000001 (21 bits)
Octal	0o7451201
Hexadecimal	0x1E5281

Divisor Catalog (2)

1 1,987,201

Collatz Trajectory (215 steps to reach 1)

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

1,987,201 5,961,604 2,980,802 1,490,401 4,471,204 2,235,602 1,117,801 3,353,404 1,676,702 838,351 2,515,054 1,257,527 3,772,582 1,886,291 5,658,874 2,829,437 8,488,312 4,244,156 2,122,078 1,061,039 3,183,118 1,591,559 4,774,678 2,387,339 7,162,018 3,581,009 10,743,028 5,371,514 2,685,757 8,057,272 4,028,636 2,014,318 1,007,159 3,021,478 1,510,739 4,532,218 2,266,109 6,798,328 3,399,164 1,699,582 849,791 2,549,374 1,274,687 3,824,062 1,912,031 5,736,094 2,868,047 8,604,142 4,302,071 12,906,214 6,453,107 19,359,322 9,679,661 29,038,984 14,519,492 7,259,746 3,629,873 10,889,620 5,444,810 2,722,405

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