1,821,212

2² × 59 × 7717

1,821,212 factors as 2^2 × 59 × 7717. Its 12 positive divisors give a proper-divisor sum of 1,420,348, so this integer is deficient. The Collatz stopping time is 158 steps.

Prime Factor Structure

Factorization String 2^2 × 59 × 7717

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 3,241,560

Proper Divisor Sum 1,420,348

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #1821191 ← → #1821233

Radix Representation

Decimal	1821212
Binary	110111100101000011100 (21 bits)
Octal	0o6745034
Hexadecimal	0x1BCA1C

Divisor Catalog (12)

1 2 4 59 118 236 7,717 15,434 30,868 455,303 910,606 1,821,212

Collatz Trajectory (158 steps to reach 1)

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

1,821,212 910,606 455,303 1,365,910 682,955 2,048,866 1,024,433 3,073,300 1,536,650 768,325 2,304,976 1,152,488 576,244 288,122 144,061 432,184 216,092 108,046 54,023 162,070 81,035 243,106 121,553 364,660 182,330 91,165 273,496 136,748 68,374 34,187 102,562 51,281 153,844 76,922 38,461 115,384 57,692 28,846 14,423 43,270 21,635 64,906 32,453 97,360 48,680 24,340 12,170 6,085 18,256 9,128 4,564 2,282 1,141 3,424 1,712 856 428 214 107 322

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