81826268 has 12 divisors (see below), whose sum is σ = 144289992. Its totient is φ = 40600560.

The previous prime is 81826247. The next prime is 81826271. The reversal of 81826268 is 86262818.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77555 + ... + 78602.

It is an arithmetic number, because the mean of its divisors is an integer number (12024166).

Almost surely, 2^81826268 is an apocalyptic number.

It is an amenable number.

81826268 is a deficient number, since it is larger than the sum of its proper divisors (62463724).

81826268 is a wasteful number, since it uses less digits than its factorization.

81826268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156292 (or 156290 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 81826268 is about 9045.7873068075. The cubic root of 81826268 is about 434.1411123455.

The spelling of 81826268 in words is "eighty-one million, eight hundred twenty-six thousand, two hundred sixty-eight".