728194 has 8 divisors (see below), whose sum is σ = 1149840. Its totient is φ = 344916.

The previous prime is 728191. The next prime is 728207. The reversal of 728194 is 491827.

728194 is nontrivially palindromic in base 3.

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

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (728191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9544 + ... + 9619.

It is an arithmetic number, because the mean of its divisors is an integer number (143730).

2⁷²⁸¹⁹⁴ is an apocalyptic number.

728194 is a deficient number, since it is larger than the sum of its proper divisors (421646).

728194 is a wasteful number, since it uses less digits than its factorization.

728194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19184.

The product of its digits is 4032, while the sum is 31.

The square root of 728194 is about 853.3428384887. The cubic root of 728194 is about 89.9668190442.

The spelling of 728194 in words is "seven hundred twenty-eight thousand, one hundred ninety-four".