81298 has 8 divisors (see below), whose sum is σ = 139392. Its totient is φ = 34836.

The previous prime is 81293. The next prime is 81299. The reversal of 81298 is 89218.

It is a sphenic number, since it is the product of 3 distinct primes.

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

It is not an unprimeable number, because it can be changed into a prime (81293) by changing a digit.

81298 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2890 + ... + 2917.

It is an arithmetic number, because the mean of its divisors is an integer number (17424).

2⁸¹²⁹⁸ is an apocalyptic number.

81298 is a deficient number, since it is larger than the sum of its proper divisors (58094).

81298 is a wasteful number, since it uses less digits than its factorization.

81298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816.

The product of its digits is 1152, while the sum is 28.

The square root of 81298 is about 285.1280414130. The cubic root of 81298 is about 43.3204827115.

The spelling of 81298 in words is "eighty-one thousand, two hundred ninety-eight".