1,989,221

13 × 17 × 9001

1,989,221 factors as 13 × 17 × 9001. Its 8 positive divisors give a proper-divisor sum of 279,283, so this integer is deficient. The Collatz stopping time is 65 steps.

Prime Factor Structure

Factorization String 13 × 17 × 9001

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 2,268,504

Proper Divisor Sum 279,283

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #1989217 ← → #1989233

Radix Representation

Decimal	1989221
Binary	111100101101001100101 (21 bits)
Octal	0o7455145
Hexadecimal	0x1E5A65

Divisor Catalog (8)

1 13 17 221 9,001 117,013 153,017 1,989,221

Collatz Trajectory (65 steps to reach 1)

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

1,989,221 5,967,664 2,983,832 1,491,916 745,958 372,979 1,118,938 559,469 1,678,408 839,204 419,602 209,801 629,404 314,702 157,351 472,054 236,027 708,082 354,041 1,062,124 531,062 265,531 796,594 398,297 1,194,892 597,446 298,723 896,170 448,085 1,344,256 672,128 336,064 168,032 84,016 42,008 21,004 10,502 5,251 15,754 7,877 23,632 11,816 5,908 2,954 1,477 4,432 2,216 1,108 554 277 832 416 208 104 52 26 13 40 20 10

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