1,990,165

5 × 398033

1,990,165 factors as 5 × 398033. Its 4 positive divisors give a proper-divisor sum of 398,039, so this integer is deficient. The Collatz stopping time is 215 steps.

Prime Factor Structure

Factorization String 5 × 398033

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,388,204

Proper Divisor Sum 398,039

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #1990159 ← → #1990171

Radix Representation

Decimal	1990165
Binary	111100101111000010101 (21 bits)
Octal	0o7457025
Hexadecimal	0x1E5E15

Divisor Catalog (4)

1 5 398,033 1,990,165

Collatz Trajectory (215 steps to reach 1)

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

1,990,165 5,970,496 2,985,248 1,492,624 746,312 373,156 186,578 93,289 279,868 139,934 69,967 209,902 104,951 314,854 157,427 472,282 236,141 708,424 354,212 177,106 88,553 265,660 132,830 66,415 199,246 99,623 298,870 149,435 448,306 224,153 672,460 336,230 168,115 504,346 252,173 756,520 378,260 189,130 94,565 283,696 141,848 70,924 35,462 17,731 53,194 26,597 79,792 39,896 19,948 9,974 4,987 14,962 7,481 22,444 11,222 5,611 16,834 8,417 25,252 12,626

More profiles

Browse other published profiles and their separate link collections.

No other profiles in this collection.

← Previous Integer #1,990,164 Browse Full Index Next Integer #1,990,166 →