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1,664,530

2 × 5 × 72 × 43 × 79
Abundant Even Composite

1,664,530 factors as 2 × 5 × 7^2 × 43 × 79. Its 48 positive divisors give a proper-divisor sum of 1,946,990, so this integer is abundant. The Collatz stopping time is 132 steps.

Prime Factor Structure

Factorization String 2 × 5 × 7^2 × 43 × 79
Distinct Prime Factors 5
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 48
Divisor Sum (σ) 3,611,520
Proper Divisor Sum 1,946,990
Digit Sum / Digital Root 25 (Root: 7)
Adjacent Primes #1664501 ← → #1664543

Radix Representation

Decimal 1664530
Binary 110010110011000010010 (21 bits)
Octal 0o6263022
Hexadecimal 0x196612

Divisor Catalog (48)

1 2 5 7 10 14 35 43 49 70 79 86 98 158 215 245 301 395 430 490 553 602 790 1,106 1,505 2,107 2,765 3,010 3,397 3,871 4,214 5,530 6,794 7,742 10,535 16,985 19,355 21,070 23,779 33,970 38,710 47,558 118,895 166,453 237,790 332,906 832,265 1,664,530

Collatz Trajectory (132 steps to reach 1)

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

1,664,530 832,265 2,496,796 1,248,398 624,199 1,872,598 936,299 2,808,898 1,404,449 4,213,348 2,106,674 1,053,337 3,160,012 1,580,006 790,003 2,370,010 1,185,005 3,555,016 1,777,508 888,754 444,377 1,333,132 666,566 333,283 999,850 499,925 1,499,776 749,888 374,944 187,472 93,736 46,868 23,434 11,717 35,152 17,576 8,788 4,394 2,197 6,592 3,296 1,648 824 412 206 103 310 155 466 233 700 350 175 526 263 790 395 1,186 593 1,780

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