81260326 has 12 divisors (see below), whose sum is σ = 141791148. Its totient is φ = 34825812.

The previous prime is 81260303. The next prime is 81260329. The reversal of 81260326 is 62306218.

It is a junction number, because it is equal to n+sod(n) for n = 81260294 and 81260303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81260329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 414496 + ... + 414691.

It is an arithmetic number, because the mean of its divisors is an integer number (11815929).

Almost surely, 2^81260326 is an apocalyptic number.

81260326 is a deficient number, since it is larger than the sum of its proper divisors (60530822).

81260326 is a wasteful number, since it uses less digits than its factorization.

81260326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829203 (or 829196 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 81260326 is about 9014.4509538851. The cubic root of 81260326 is about 433.1379001701.

The spelling of 81260326 in words is "eighty-one million, two hundred sixty thousand, three hundred twenty-six".