1,290,940

2² × 5 × 7 × 9221

1,290,940 factors as 2^2 × 5 × 7 × 9221. Its 24 positive divisors give a proper-divisor sum of 1,807,652, so this integer is abundant. The Collatz stopping time is 217 steps.

Prime Factor Structure

Factorization String 2^2 × 5 × 7 × 9221

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 3,098,592

Proper Divisor Sum 1,807,652

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #1290937 ← → #1290983

Radix Representation

Decimal	1290940
Binary	100111011001010111100 (21 bits)
Octal	0o4731274
Hexadecimal	0x13B2BC

Divisor Catalog (24)

Collatz Trajectory (217 steps to reach 1)

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

1,290,940 645,470 322,735 968,206 484,103 1,452,310 726,155 2,178,466 1,089,233 3,267,700 1,633,850 816,925 2,450,776 1,225,388 612,694 306,347 919,042 459,521 1,378,564 689,282 344,641 1,033,924 516,962 258,481 775,444 387,722 193,861 581,584 290,792 145,396 72,698 36,349 109,048 54,524 27,262 13,631 40,894 20,447 61,342 30,671 92,014 46,007 138,022 69,011 207,034 103,517 310,552 155,276 77,638 38,819 116,458 58,229 174,688 87,344 43,672 21,836 10,918 5,459 16,378 8,189

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