1,856,990

2 × 5 × 185699

Starting at 1,856,990, the Collatz iteration reaches 1 after 189 steps. The first transition is 928495; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 185699

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 3,342,600

Proper Divisor Sum 1,485,610

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #1856989 ← → #1856999

Radix Representation

Decimal	1856990
Binary	111000101010111011110 (21 bits)
Octal	0o7052736
Hexadecimal	0x1C55DE

Divisor Catalog (8)

1 2 5 10 185,699 371,398 928,495 1,856,990

Collatz Trajectory (189 steps to reach 1)

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

1,856,990 928,495 2,785,486 1,392,743 4,178,230 2,089,115 6,267,346 3,133,673 9,401,020 4,700,510 2,350,255 7,050,766 3,525,383 10,576,150 5,288,075 15,864,226 7,932,113 23,796,340 11,898,170 5,949,085 17,847,256 8,923,628 4,461,814 2,230,907 6,692,722 3,346,361 10,039,084 5,019,542 2,509,771 7,529,314 3,764,657 11,293,972 5,646,986 2,823,493 8,470,480 4,235,240 2,117,620 1,058,810 529,405 1,588,216 794,108 397,054 198,527 595,582 297,791 893,374 446,687 1,340,062 670,031 2,010,094 1,005,047 3,015,142 1,507,571 4,522,714 2,261,357 6,784,072 3,392,036 1,696,018 848,009 2,544,028

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