181056

Appears in sequences

• Octagonal numbers for which the sum of the digits is also an octagonal number.at n=21A117082
• Octagonal numbers for which both the sum and the product of the digits is also an octagonal number.at n=10A117084
• Octagonal numbers (A000567) in which parity of digits alternates.at n=25A297647
• The first of three consecutive octagonal numbers the sum of which is equal to the sum of three consecutive primes.at n=3A298312