81096 has 32 divisors (see below), whose sum is σ = 211200. Its totient is φ = 25920.

The previous prime is 81083. The next prime is 81097. The reversal of 81096 is 69018.

It is a super-2 number, since 2×81096² = 13153122432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (81097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690 + ... + 798.

It is an arithmetic number, because the mean of its divisors is an integer number (6600).

2⁸¹⁰⁹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105600).

81096 is an abundant number, since it is smaller than the sum of its proper divisors (130104).

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

81096 is a wasteful number, since it uses less digits than its factorization.

81096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 81096 is about 284.7735942815. The cubic root of 81096 is about 43.2845736890.

The spelling of 81096 in words is "eighty-one thousand, ninety-six".