2,801,628

2² × 3⁴ × 8647

2,801,628 has digital root 9. The neighboring primes are 2801621 and 2801641; its proper-divisor sum differs from the starting integer by 1,721,600.

Prime Factor Structure

Factorization String 2^2 × 3^4 × 8647

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Total Divisors 30

Divisor Sum (σ) 7,324,856

Proper Divisor Sum 4,523,228

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #2801621 ← → #2801641

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

2,801,628 1,400,814 700,407 2,101,222 1,050,611 3,151,834 1,575,917 4,727,752 2,363,876 1,181,938 590,969 1,772,908 886,454 443,227 1,329,682 664,841 1,994,524 997,262 498,631 1,495,894 747,947 2,243,842 1,121,921 3,365,764 1,682,882 841,441 2,524,324 1,262,162 631,081 1,893,244 946,622 473,311 1,419,934 709,967 2,129,902 1,064,951 3,194,854 1,597,427 4,792,282 2,396,141 7,188,424 3,594,212 1,797,106 898,553 2,695,660 1,347,830 673,915 2,021,746 1,010,873 3,032,620 1,516,310 758,155 2,274,466 1,137,233 3,411,700 1,705,850 852,925 2,558,776 1,279,388 639,694