7,216,870

2 × 5 × 721687

Starting at 7,216,870, the Collatz iteration reaches 1 after 116 steps. The first transition is 3608435; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 721687

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 12,990,384

Proper Divisor Sum 5,773,514

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #7216837 ← → #7216879

Radix Representation

Decimal	7216870
Binary	11011100001111011100110 (23 bits)
Octal	0o33417346
Hexadecimal	0x6E1EE6

Divisor Catalog (8)

1 2 5 10 721,687 1,443,374 3,608,435 7,216,870

Collatz Trajectory (116 steps to reach 1)

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

7,216,870 3,608,435 10,825,306 5,412,653 16,237,960 8,118,980 4,059,490 2,029,745 6,089,236 3,044,618 1,522,309 4,566,928 2,283,464 1,141,732 570,866 285,433 856,300 428,150 214,075 642,226 321,113 963,340 481,670 240,835 722,506 361,253 1,083,760 541,880 270,940 135,470 67,735 203,206 101,603 304,810 152,405 457,216 228,608 114,304 57,152 28,576 14,288 7,144 3,572 1,786 893 2,680 1,340 670 335 1,006 503 1,510 755 2,266 1,133 3,400 1,700 850 425 1,276

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