81846 has 12 divisors (see below), whose sum is σ = 177372. Its totient is φ = 27276.

The previous prime is 81839. The next prime is 81847. The reversal of 81846 is 64818.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2256 + ... + 2291.

It is an arithmetic number, because the mean of its divisors is an integer number (14781).

2⁸¹⁸⁴⁶ is an apocalyptic number.

81846 is an abundant number, since it is smaller than the sum of its proper divisors (95526).

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

81846 is a wasteful number, since it uses less digits than its factorization.

81846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4555 (or 4552 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 81846 is about 286.0873992332. The cubic root of 81846 is about 43.4176006535.

The spelling of 81846 in words is "eighty-one thousand, eight hundred forty-six".