1,383,428

2² × 19 × 109 × 167

Starting at 1,383,428, the Collatz iteration reaches 1 after 80 steps. The first transition is 691714; the starting value is even with 24 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 19 × 109 × 167

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 2,587,200

Proper Divisor Sum 1,203,772

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #1383401 ← → #1383433

Radix Representation

Decimal	1383428
Binary	101010001110000000100 (21 bits)
Octal	0o5216004
Hexadecimal	0x151C04

Divisor Catalog (24)

1 2 4 19 38 76 109 167 218 334 436 668 2,071 3,173 4,142 6,346 8,284 12,692 18,203 36,406 72,812 345,857 691,714 1,383,428

Collatz Trajectory (80 steps to reach 1)

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

1,383,428 691,714 345,857 1,037,572 518,786 259,393 778,180 389,090 194,545 583,636 291,818 145,909 437,728 218,864 109,432 54,716 27,358 13,679 41,038 20,519 61,558 30,779 92,338 46,169 138,508 69,254 34,627 103,882 51,941 155,824 77,912 38,956 19,478 9,739 29,218 14,609 43,828 21,914 10,957 32,872 16,436 8,218 4,109 12,328 6,164 3,082 1,541 4,624 2,312 1,156 578 289 868 434 217 652 326 163 490 245

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