81348882 has 8 divisors (see below), whose sum is σ = 162697776. Its totient is φ = 27116292.

The previous prime is 81348863. The next prime is 81348887. The reversal of 81348882 is 28884318.

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

81348882 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (81348887) by changing a digit.

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, 6779068 + ... + 6779079.

It is an arithmetic number, because the mean of its divisors is an integer number (20337222).

Almost surely, 2^81348882 is an apocalyptic number.

81348882 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.

81348882 is a wasteful number, since it uses less digits than its factorization.

81348882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13558152.

The product of its digits is 98304, while the sum is 42.

The square root of 81348882 is about 9019.3615073352. The cubic root of 81348882 is about 433.2951849389.

The spelling of 81348882 in words is "eighty-one million, three hundred forty-eight thousand, eight hundred eighty-two".