81527326 has 8 divisors (see below), whose sum is σ = 123224904. Its totient is φ = 40452360.

The previous prime is 81527273. The next prime is 81527357. The reversal of 81527326 is 62372518.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 81527291 and 81527300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155325 + ... + 155848.

It is an arithmetic number, because the mean of its divisors is an integer number (15403113).

Almost surely, 2^81527326 is an apocalyptic number.

81527326 is a deficient number, since it is larger than the sum of its proper divisors (41697578).

81527326 is a wasteful number, since it uses less digits than its factorization.

81527326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311306.

The product of its digits is 20160, while the sum is 34.

The square root of 81527326 is about 9029.2483629591. The cubic root of 81527326 is about 433.6117738425.

The spelling of 81527326 in words is "eighty-one million, five hundred twenty-seven thousand, three hundred twenty-six".