81083286 has 12 divisors (see below), whose sum is σ = 175680492. Its totient is φ = 27027756.

The previous prime is 81083273. The next prime is 81083297. The reversal of 81083286 is 68238018.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 81083286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2252296 + ... + 2252331.

It is an arithmetic number, because the mean of its divisors is an integer number (14640041).

Almost surely, 2^81083286 is an apocalyptic number.

81083286 is an abundant number, since it is smaller than the sum of its proper divisors (94597206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81083286 is a wasteful number, since it uses less digits than its factorization.

81083286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4504635 (or 4504632 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 81083286 is about 9004.6258112150. The cubic root of 81083286 is about 432.8231156002.

The spelling of 81083286 in words is "eighty-one million, eighty-three thousand, two hundred eighty-six".