81282 has 32 divisors (see below), whose sum is σ = 184320. Its totient is φ = 23760.

The previous prime is 81281. The next prime is 81283. The reversal of 81282 is 28218.

It is an interprime number because it is at equal distance from previous prime (81281) and next prime (81283).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2607 + ... + 2637.

It is an arithmetic number, because the mean of its divisors is an integer number (5760).

2⁸¹²⁸² is an apocalyptic number.

81282 is an abundant number, since it is smaller than the sum of its proper divisors (103038).

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 (92160).

81282 is a wasteful number, since it uses less digits than its factorization.

81282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78.

The product of its digits is 256, while the sum is 21.

The square root of 81282 is about 285.0999824623. The cubic root of 81282 is about 43.3176406031.

It can be divided in two parts, 81 and 282, that added together give a palindrome (363).

The spelling of 81282 in words is "eighty-one thousand, two hundred eighty-two".