1,340,720

2⁴ × 5 × 16759

Starting at 1,340,720, the Collatz iteration reaches 1 after 116 steps. The first transition is 670360; the starting value is even with 20 positive divisors.

Prime Factor Structure

Factorization String 2^4 × 5 × 16759

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 3,117,360

Proper Divisor Sum 1,776,640

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #1340707 ← → #1340723

Radix Representation

Decimal	1340720
Binary	101000111010100110000 (21 bits)
Octal	0o5072460
Hexadecimal	0x147530

Divisor Catalog (20)

1 2 4 5 8 10 16 20 40 80 16,759 33,518 67,036 83,795 134,072 167,590 268,144 335,180 670,360 1,340,720

Collatz Trajectory (116 steps to reach 1)

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

1,340,720 670,360 335,180 167,590 83,795 251,386 125,693 377,080 188,540 94,270 47,135 141,406 70,703 212,110 106,055 318,166 159,083 477,250 238,625 715,876 357,938 178,969 536,908 268,454 134,227 402,682 201,341 604,024 302,012 151,006 75,503 226,510 113,255 339,766 169,883 509,650 254,825 764,476 382,238 191,119 573,358 286,679 860,038 430,019 1,290,058 645,029 1,935,088 967,544 483,772 241,886 120,943 362,830 181,415 544,246 272,123 816,370 408,185 1,224,556 612,278 306,139

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