728494 has 8 divisors (see below), whose sum is σ = 1176840. Its totient is φ = 336216.

The previous prime is 728489. The next prime is 728521. The reversal of 728494 is 494827.

It is a happy number.

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

It is a super-3 number, since 3×728494³ = 1159842964149533352, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13984 + ... + 14035.

It is an arithmetic number, because the mean of its divisors is an integer number (147105).

2⁷²⁸⁴⁹⁴ is an apocalyptic number.

728494 is a deficient number, since it is larger than the sum of its proper divisors (448346).

728494 is a wasteful number, since it uses less digits than its factorization.

728494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28034.

The product of its digits is 16128, while the sum is 34.

The square root of 728494 is about 853.5185996802. The cubic root of 728494 is about 89.9791721351.

The spelling of 728494 in words is "seven hundred twenty-eight thousand, four hundred ninety-four".