81264326 has 36 divisors (see below), whose sum is σ = 145157796. Its totient is φ = 34079760.

The previous prime is 81264319. The next prime is 81264331. The reversal of 81264326 is 62346218.

It is a junction number, because it is equal to n+sod(n) for n = 81264292 and 81264301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 39905 + ... + 41891.

It is an arithmetic number, because the mean of its divisors is an integer number (4032161).

Almost surely, 2^81264326 is an apocalyptic number.

81264326 is a deficient number, since it is larger than the sum of its proper divisors (63893470).

81264326 is a wasteful number, since it uses less digits than its factorization.

81264326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2013 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 81264326 is about 9014.6728171354. The cubic root of 81264326 is about 433.1450070543.

The spelling of 81264326 in words is "eighty-one million, two hundred sixty-four thousand, three hundred twenty-six".