21,027,438

2 × 3⁴ × 293 × 443

Prime Factor Structure

Factorization String 2 × 3^4 × 293 × 443

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Total Divisors 40

Divisor Sum (σ) 47,384,568

Proper Divisor Sum 26,357,130

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #21027421 ← → #21027443

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

21,027,438 10,513,719 31,541,158 15,770,579 47,311,738 23,655,869 70,967,608 35,483,804 17,741,902 8,870,951 26,612,854 13,306,427 39,919,282 19,959,641 59,878,924 29,939,462 14,969,731 44,909,194 22,454,597 67,363,792 33,681,896 16,840,948 8,420,474 4,210,237 12,630,712 6,315,356 3,157,678 1,578,839 4,736,518 2,368,259 7,104,778 3,552,389 10,657,168 5,328,584 2,664,292 1,332,146 666,073 1,998,220 999,110 499,555 1,498,666 749,333 2,248,000 1,124,000 562,000 281,000 140,500 70,250 35,125 105,376 52,688 26,344 13,172 6,586 3,293 9,880 4,940 2,470 1,235 3,706

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