81245326 has 8 divisors (see below), whose sum is σ = 122067360. Its totient is φ = 40556208.

The previous prime is 81245323. The next prime is 81245347. The reversal of 81245326 is 62354218.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81245321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31686 + ... + 34153.

It is an arithmetic number, because the mean of its divisors is an integer number (15258420).

Almost surely, 2^81245326 is an apocalyptic number.

81245326 is a deficient number, since it is larger than the sum of its proper divisors (40822034).

81245326 is a wasteful number, since it uses less digits than its factorization.

81245326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66458.

The product of its digits is 11520, while the sum is 31.

The square root of 81245326 is about 9013.6189180595. The cubic root of 81245326 is about 433.1112472772. Note that the first 3 decimals are identical.

The spelling of 81245326 in words is "eighty-one million, two hundred forty-five thousand, three hundred twenty-six".