1,906,840

2³ × 5 × 13 × 19 × 193

Starting at 1,906,840, the Collatz iteration reaches 1 after 246 steps. The first transition is 953420; the starting value is even with 64 positive divisors.

Prime Factor Structure

Factorization String 2^3 × 5 × 13 × 19 × 193

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 64

Divisor Sum (σ) 4,888,800

Proper Divisor Sum 2,981,960

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #1906831 ← → #1906843

Radix Representation

Decimal	1906840
Binary	111010001100010011000 (21 bits)
Octal	0o7214230
Hexadecimal	0x1D1898

Divisor Catalog (60 of 64)

1 2 4 5 8 10 13 19 20 26 38 40 52 65 76 95 104 130 152 190 193 247 260 380 386 494 520 760 772 965 988 1,235 1,544 1,930 1,976 2,470 2,509 3,667 3,860 4,940 5,018 7,334 7,720 9,880 10,036 12,545 14,668 18,335 20,072 25,090 29,336 36,670 47,671 50,180 73,340 95,342 100,360 146,680 190,684 238,355

Collatz Trajectory (246 steps to reach 1)

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

1,906,840 953,420 476,710 238,355 715,066 357,533 1,072,600 536,300 268,150 134,075 402,226 201,113 603,340 301,670 150,835 452,506 226,253 678,760 339,380 169,690 84,845 254,536 127,268 63,634 31,817 95,452 47,726 23,863 71,590 35,795 107,386 53,693 161,080 80,540 40,270 20,135 60,406 30,203 90,610 45,305 135,916 67,958 33,979 101,938 50,969 152,908 76,454 38,227 114,682 57,341 172,024 86,012 43,006 21,503 64,510 32,255 96,766 48,383 145,150 72,575

← Previous Integer #1,906,839 Browse Full Index Next Integer #1,906,841 →