81760326 has 16 divisors (see below), whose sum is σ = 163610928. Its totient is φ = 27238400.

The previous prime is 81760303. The next prime is 81760333. The reversal of 81760326 is 62306718.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16006 + ... + 20486.

It is an arithmetic number, because the mean of its divisors is an integer number (10225683).

Almost surely, 2^81760326 is an apocalyptic number.

81760326 is an abundant number, since it is smaller than the sum of its proper divisors (81850602).

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

81760326 is a wasteful number, since it uses less digits than its factorization.

81760326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7527.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 81760326 is about 9042.1416710866. The cubic root of 81760326 is about 434.0244593944.

The spelling of 81760326 in words is "eighty-one million, seven hundred sixty thousand, three hundred twenty-six".