81468044 has 12 divisors (see below), whose sum is σ = 162936144. Its totient is φ = 34914864.

The previous prime is 81468011. The next prime is 81468053. The reversal of 81468044 is 44086418.

81468044 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 81467995 and 81468013.

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 3 ways as a sum of consecutive naturals, for example, 1454759 + ... + 1454814.

It is an arithmetic number, because the mean of its divisors is an integer number (13578012).

Almost surely, 2^81468044 is an apocalyptic number.

It is an amenable number.

81468044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

81468044 is a wasteful number, since it uses less digits than its factorization.

81468044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909584 (or 2909582 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 81468044 is about 9025.9649899609. The cubic root of 81468044 is about 433.5066491461.

The spelling of 81468044 in words is "eighty-one million, four hundred sixty-eight thousand, forty-four".