21621497

Prime Factor Structure

Factorization String 21621497

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 21,621,498

Proper Divisor Sum 1

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #21621491 ← → #21621527

1 21,621,497

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

21,621,497 64,864,492 32,432,246 16,216,123 48,648,370 24,324,185 72,972,556 36,486,278 18,243,139 54,729,418 27,364,709 82,094,128 41,047,064 20,523,532 10,261,766 5,130,883 15,392,650 7,696,325 23,088,976 11,544,488 5,772,244 2,886,122 1,443,061 4,329,184 2,164,592 1,082,296 541,148 270,574 135,287 405,862 202,931 608,794 304,397 913,192 456,596 228,298 114,149 342,448 171,224 85,612 42,806 21,403 64,210 32,105 96,316 48,158 24,079 72,238 36,119 108,358 54,179 162,538 81,269 243,808 121,904 60,952 30,476 15,238 7,619 22,858

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