1,556,636

2² × 107 × 3637

Starting at 1,556,636, the Collatz iteration reaches 1 after 194 steps. The first transition is 778318; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 107 × 3637

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 2,750,328

Proper Divisor Sum 1,193,692

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #1556623 ← → #1556641

Radix Representation

Decimal	1556636
Binary	101111100000010011100 (21 bits)
Octal	0o5740234
Hexadecimal	0x17C09C

Divisor Catalog (12)

1 2 4 107 214 428 3,637 7,274 14,548 389,159 778,318 1,556,636

Collatz Trajectory (194 steps to reach 1)

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

1,556,636 778,318 389,159 1,167,478 583,739 1,751,218 875,609 2,626,828 1,313,414 656,707 1,970,122 985,061 2,955,184 1,477,592 738,796 369,398 184,699 554,098 277,049 831,148 415,574 207,787 623,362 311,681 935,044 467,522 233,761 701,284 350,642 175,321 525,964 262,982 131,491 394,474 197,237 591,712 295,856 147,928 73,964 36,982 18,491 55,474 27,737 83,212 41,606 20,803 62,410 31,205 93,616 46,808 23,404 11,702 5,851 17,554 8,777 26,332 13,166 6,583 19,750 9,875

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