81046 has 12 divisors (see below), whose sum is σ = 141588. Its totient is φ = 34692.

The previous prime is 81043. The next prime is 81047. The reversal of 81046 is 64018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81041) 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, 316 + ... + 511.

It is an arithmetic number, because the mean of its divisors is an integer number (11799).

2⁸¹⁰⁴⁶ is an apocalyptic number.

81046 is a deficient number, since it is larger than the sum of its proper divisors (60542).

81046 is a wasteful number, since it uses less digits than its factorization.

81046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 81046 is about 284.6857917073. The cubic root of 81046 is about 43.2756761124.

The spelling of 81046 in words is "eighty-one thousand, forty-six".