1,578,404

2² × 394601

Starting at 1,578,404, the Collatz iteration reaches 1 after 88 steps. The first transition is 789202; the starting value is even with 6 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 394601

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 6

Divisor Sum (σ) 2,762,214

Proper Divisor Sum 1,183,810

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #1578397 ← → #1578407

Radix Representation

Decimal	1578404
Binary	110000001010110100100 (21 bits)
Octal	0o6012644
Hexadecimal	0x1815A4

Divisor Catalog (6)

1 2 4 394,601 789,202 1,578,404

Collatz Trajectory (88 steps to reach 1)

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

1,578,404 789,202 394,601 1,183,804 591,902 295,951 887,854 443,927 1,331,782 665,891 1,997,674 998,837 2,996,512 1,498,256 749,128 374,564 187,282 93,641 280,924 140,462 70,231 210,694 105,347 316,042 158,021 474,064 237,032 118,516 59,258 29,629 88,888 44,444 22,222 11,111 33,334 16,667 50,002 25,001 75,004 37,502 18,751 56,254 28,127 84,382 42,191 126,574 63,287 189,862 94,931 284,794 142,397 427,192 213,596 106,798 53,399 160,198 80,099 240,298 120,149 360,448

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