λ
Ratio Atlas
Atlas › Integer Profiles › Node 21,395,881
21,395,881
13 × 19 × 292 × 103
Deficient Odd Composite

Prime Factor Structure

Factorization String 13 × 19 × 29^2 × 103
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 24
Divisor Sum (σ) 25,363,520
Proper Divisor Sum 3,967,639
Digit Sum / Digital Root 37 (Root: 1)
Adjacent Primes #21395863 ← → #21395893

Radix Representation

Decimal 21395881
Binary 1010001100111100110101001 (25 bits)
Octal 0o121474651
Hexadecimal 0x14679A9

Divisor Catalog (24)

1 13 19 29 103 247 377 551 841 1,339 1,957 2,987 7,163 10,933 15,979 25,441 38,831 56,753 86,623 207,727 737,789 1,126,099 1,645,837 21,395,881

Collatz Trajectory (172 steps to reach 1)

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

21,395,881 64,187,644 32,093,822 16,046,911 48,140,734 24,070,367 72,211,102 36,105,551 108,316,654 54,158,327 162,474,982 81,237,491 243,712,474 121,856,237 365,568,712 182,784,356 91,392,178 45,696,089 137,088,268 68,544,134 34,272,067 102,816,202 51,408,101 154,224,304 77,112,152 38,556,076 19,278,038 9,639,019 28,917,058 14,458,529 43,375,588 21,687,794 10,843,897 32,531,692 16,265,846 8,132,923 24,398,770 12,199,385 36,598,156 18,299,078 9,149,539 27,448,618 13,724,309 41,172,928 20,586,464 10,293,232 5,146,616 2,573,308 1,286,654 643,327 1,929,982 964,991 2,894,974 1,447,487 4,342,462 2,171,231 6,513,694 3,256,847 9,770,542 4,885,271

Active Feeder Network

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.

Feeder #7,737,779 Feeder #685,881 Feeder #2,871,188 Feeder #906,051 Feeder #1,285,993 Feeder #7,584,379 Feeder #4,761,186 Feeder #626,174
← Previous Integer #21,395,880 Browse Full Index Next Integer #21,395,882 →