636,400

2⁴ × 5² × 37 × 43

Prime Factor Structure

Factorization String 2^4 × 5^2 × 37 × 43

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Total Divisors 60

Divisor Sum (σ) 1,606,792

Proper Divisor Sum 970,392

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #636359 ← → #636403

1 2 4 5 8 10 16 20 25 37 40 43 50 74 80 86 100 148 172 185 200 215 296 344 370 400 430 592 688 740 860 925 1,075 1,480 1,591 1,720 1,850 2,150 2,960 3,182 3,440 3,700 4,300 6,364 7,400 7,955 8,600 12,728 14,800 15,910 17,200 25,456 31,820 39,775 63,640 79,550 127,280 159,100 318,200 636,400

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

636,400 318,200 159,100 79,550 39,775 119,326 59,663 178,990 89,495 268,486 134,243 402,730 201,365 604,096 302,048 151,024 75,512 37,756 18,878 9,439 28,318 14,159 42,478 21,239 63,718 31,859 95,578 47,789 143,368 71,684 35,842 17,921 53,764 26,882 13,441 40,324 20,162 10,081 30,244 15,122 7,561 22,684 11,342 5,671 17,014 8,507 25,522 12,761 38,284 19,142 9,571 28,714 14,357 43,072 21,536 10,768 5,384 2,692 1,346 673

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