λ
Sequence Observatory

1,987,486

2 × 29 × 34267
Deficient Even Composite

Starting at 1,987,486, the Collatz iteration reaches 1 after 122 steps. The first transition is 993743; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 29 × 34267
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 3,084,120
Proper Divisor Sum 1,096,634
Digit Sum / Digital Root 43 (Root: 7)
Adjacent Primes #1987483 ← → #1987501

Radix Representation

Decimal 1987486
Binary 111100101001110011110 (21 bits)
Octal 0o7451636
Hexadecimal 0x1E539E

Divisor Catalog (8)

1 2 29 58 34,267 68,534 993,743 1,987,486

Collatz Trajectory (122 steps to reach 1)

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

1,987,486 993,743 2,981,230 1,490,615 4,471,846 2,235,923 6,707,770 3,353,885 10,061,656 5,030,828 2,515,414 1,257,707 3,773,122 1,886,561 5,659,684 2,829,842 1,414,921 4,244,764 2,122,382 1,061,191 3,183,574 1,591,787 4,775,362 2,387,681 7,163,044 3,581,522 1,790,761 5,372,284 2,686,142 1,343,071 4,029,214 2,014,607 6,043,822 3,021,911 9,065,734 4,532,867 13,598,602 6,799,301 20,397,904 10,198,952 5,099,476 2,549,738 1,274,869 3,824,608 1,912,304 956,152 478,076 239,038 119,519 358,558 179,279 537,838 268,919 806,758 403,379 1,210,138 605,069 1,815,208 907,604 453,802

More profiles

← Previous Integer #1,987,485 Browse Full Index Next Integer #1,987,487 →