Integer Profile

1,987,638

2 × 3 × 257 × 1289

Prime factors, divisor sums, positional representations and sequence properties for 1,987,638. The prime factorization is 2 × 3 × 257 × 1289.

Number of positive divisors: 16. Showing the recorded part of the sequence: 122.

AbundantEvenComposite

Divisor catalog (16)

12362575147711,2891,5422,5783,8677,734331,273662,546993,8191,987,638

Showing 16 of 16.

Collatz trajectory (122 steps)

Even: n → n/2; Odd: n → 3n + 1

1,987,638993,8192,981,4581,490,7294,472,1882,236,0941,118,0473,354,1421,677,0715,031,2142,515,6077,546,8223,773,41111,320,2345,660,11716,980,3528,490,1764,245,0882,122,5441,061,272530,636265,318132,659397,978198,989596,968298,484149,24274,621223,864111,93255,96627,98383,95041,975125,92662,963188,89094,445283,336141,66870,83435,417106,25253,12626,56379,69039,845119,53659,76829,88414,9427,47122,41411,20733,62216,81150,43425,21775,652

Showing 60 of 60.

Prime factorization

Factorization: 2 × 3 × 257 × 1289
Distinct prime factors: 4
Perfect square: No
Parity: Even

Arithmetic properties

Positive divisors: 16
Divisor sum: 3,993,840
Proper-divisor sum: 2,006,202
Digit sum: 42
Digital root: 6

Number bases

Decimal: 1987638
Binary: 111100101010000110110 (21 bits)
Octal: 0o7452066
Hexadecimal: 0x1E5436