2,638,940

2² × 5 × 131947

2,638,940 factors as 2^2 × 5 × 131947. Its 12 positive divisors give a proper-divisor sum of 2,902,876, so this integer is abundant. The Collatz stopping time is 125 steps.

Prime Factor Structure

Factorization String 2^2 × 5 × 131947

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 5,541,816

Proper Divisor Sum 2,902,876

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #2638931 ← → #2638949

Radix Representation

Decimal	2638940
Binary	1010000100010001011100 (22 bits)
Octal	0o12042134
Hexadecimal	0x28445C

Divisor Catalog (12)

1 2 4 5 10 20 131,947 263,894 527,788 659,735 1,319,470 2,638,940

Collatz Trajectory (125 steps to reach 1)

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

2,638,940 1,319,470 659,735 1,979,206 989,603 2,968,810 1,484,405 4,453,216 2,226,608 1,113,304 556,652 278,326 139,163 417,490 208,745 626,236 313,118 156,559 469,678 234,839 704,518 352,259 1,056,778 528,389 1,585,168 792,584 396,292 198,146 99,073 297,220 148,610 74,305 222,916 111,458 55,729 167,188 83,594 41,797 125,392 62,696 31,348 15,674 7,837 23,512 11,756 5,878 2,939 8,818 4,409 13,228 6,614 3,307 9,922 4,961 14,884 7,442 3,721 11,164 5,582 2,791

More profiles

Browse other published profiles and their separate link collections.

Profile #8,342,168 Profile #1,146,956 Profile #9,712,347 Profile #6,573,969 Profile #965,653 Profile #4,620,983 Profile #853,259 Profile #1,288,150

← Previous Integer #2,638,939 Browse Full Index Next Integer #2,638,941 →