2,491,405

5 × 7² × 10169

2,491,405 factors as 5 × 7^2 × 10169. Its 12 positive divisors give a proper-divisor sum of 986,735, so this integer is deficient. The Collatz stopping time is 249 steps.

Prime Factor Structure

Factorization String 5 × 7^2 × 10169

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 3,478,140

Proper Divisor Sum 986,735

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #2491397 ← → #2491453

Radix Representation

Decimal	2491405
Binary	1001100000010000001101 (22 bits)
Octal	0o11402015
Hexadecimal	0x26040D

Divisor Catalog (12)

1 5 7 35 49 245 10,169 50,845 71,183 355,915 498,281 2,491,405

Collatz Trajectory (249 steps to reach 1)

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

2,491,405 7,474,216 3,737,108 1,868,554 934,277 2,802,832 1,401,416 700,708 350,354 175,177 525,532 262,766 131,383 394,150 197,075 591,226 295,613 886,840 443,420 221,710 110,855 332,566 166,283 498,850 249,425 748,276 374,138 187,069 561,208 280,604 140,302 70,151 210,454 105,227 315,682 157,841 473,524 236,762 118,381 355,144 177,572 88,786 44,393 133,180 66,590 33,295 99,886 49,943 149,830 74,915 224,746 112,373 337,120 168,560 84,280 42,140 21,070 10,535 31,606 15,803

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