28,629,328

2⁴ × 7² × 13 × 53²

Prime Factor Structure

Factorization String 2^4 × 7^2 × 13 × 53^2

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Total Divisors 90

Divisor Sum (σ) 70,824,894

Proper Divisor Sum 42,195,566

Digit Sum / Digital Root 40 (Root: 4)

Adjacent Primes #28629317 ← → #28629329

1 2 4 7 8 13 14 16 26 28 49 52 53 56 91 98 104 106 112 182 196 208 212 364 371 392 424 637 689 728 742 784 848 1,274 1,378 1,456 1,484 2,548 2,597 2,756 2,809 2,968 4,823 5,096 5,194 5,512 5,618 5,936 9,646 10,192 10,388 11,024 11,236 19,292 19,663 20,776 22,472 33,761 36,517 38,584

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

28,629,328 14,314,664 7,157,332 3,578,666 1,789,333 5,368,000 2,684,000 1,342,000 671,000 335,500 167,750 83,875 251,626 125,813 377,440 188,720 94,360 47,180 23,590 11,795 35,386 17,693 53,080 26,540 13,270 6,635 19,906 9,953 29,860 14,930 7,465 22,396 11,198 5,599 16,798 8,399 25,198 12,599 37,798 18,899 56,698 28,349 85,048 42,524 21,262 10,631 31,894 15,947 47,842 23,921 71,764 35,882 17,941 53,824 26,912 13,456 6,728 3,364 1,682 841

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