728271

Appears in sequences

• Numbers m such that m divides 10^m - 1.at n=37A014950
• Odd numbers divisible by exactly 10 primes (counted with multiplicity).at n=26A046323
• Numbers which can be expressed as the product of numbers made of only nines.at n=21A161147
• (n-1)-st elementary symmetric function of the first n terms of the periodic sequence (3,1,3,1,3,1,3,1,...).at n=18A203231
• a(n) = 37*27^n.at n=3A306472
• Odd exceptional numbers: odd k such that A005179(k) < A037019(k).at n=31A331613
• Numbers k that divide the smallest number whose sum of digits is k.at n=38A342810