21,621,429

3² × 2402381

Prime Factor Structure

Factorization String 3^2 × 2402381

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Total Divisors 6

Divisor Sum (σ) 31,230,966

Proper Divisor Sum 9,609,537

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #21621427 ← → #21621437

1 3 9 2,402,381 7,207,143 21,621,429

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

21,621,429 64,864,288 32,432,144 16,216,072 8,108,036 4,054,018 2,027,009 6,081,028 3,040,514 1,520,257 4,560,772 2,280,386 1,140,193 3,420,580 1,710,290 855,145 2,565,436 1,282,718 641,359 1,924,078 962,039 2,886,118 1,443,059 4,329,178 2,164,589 6,493,768 3,246,884 1,623,442 811,721 2,435,164 1,217,582 608,791 1,826,374 913,187 2,739,562 1,369,781 4,109,344 2,054,672 1,027,336 513,668 256,834 128,417 385,252 192,626 96,313 288,940 144,470 72,235 216,706 108,353 325,060 162,530 81,265 243,796 121,898 60,949 182,848 91,424 45,712 22,856

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