81276 has 24 divisors (see below), whose sum is σ = 204624. Its totient is φ = 24960.

The previous prime is 81239. The next prime is 81281. The reversal of 81276 is 67218.

81276 is nontrivially palindromic in base 5.

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

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 105 + ... + 416.

It is an arithmetic number, because the mean of its divisors is an integer number (8526).

2⁸¹²⁷⁶ is an apocalyptic number.

It is an amenable number.

81276 is an abundant number, since it is smaller than the sum of its proper divisors (123348).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102312).

81276 is a wasteful number, since it uses less digits than its factorization.

81276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 539 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 81276 is about 285.0894596438. The cubic root of 81276 is about 43.3165747162.

It can be divided in two parts, 812 and 76, that added together give a palindrome (888).

The spelling of 81276 in words is "eighty-one thousand, two hundred seventy-six".