81114336 has 36 divisors (see below), whose sum is σ = 230669712. Its totient is φ = 27038016.

The previous prime is 81114311. The next prime is 81114343. The reversal of 81114336 is 63341118.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 140536 + ... + 141111.

It is an arithmetic number, because the mean of its divisors is an integer number (6407492).

Almost surely, 2^81114336 is an apocalyptic number.

It is an amenable number.

81114336 is an abundant number, since it is smaller than the sum of its proper divisors (149555376).

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

81114336 is a wasteful number, since it uses less digits than its factorization.

81114336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281663 (or 281652 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 81114336 is about 9006.3497600304. The cubic root of 81114336 is about 432.8783569177.

The spelling of 81114336 in words is "eighty-one million, one hundred fourteen thousand, three hundred thirty-six".