81048 has 32 divisors (see below), whose sum is σ = 221760. Its totient is φ = 24480.

The previous prime is 81047. The next prime is 81049. The reversal of 81048 is 84018.

It is an interprime number because it is at equal distance from previous prime (81047) and next prime (81049).

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 111 + ... + 417.

It is an arithmetic number, because the mean of its divisors is an integer number (6930).

2⁸¹⁰⁴⁸ is an apocalyptic number.

81048 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110880).

81048 is an abundant number, since it is smaller than the sum of its proper divisors (140712).

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

81048 is a wasteful number, since it uses less digits than its factorization.

81048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 323 counting only the distinct ones).

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

The square root of 81048 is about 284.6893043302. The cubic root of 81048 is about 43.2760320857.

It can be divided in two parts, 810 and 48, that added together give a palindrome (858).

The spelling of 81048 in words is "eighty-one thousand, forty-eight".