728610 has 32 divisors (see below), whose sum is σ = 1771200. Its totient is φ = 191808.

The previous prime is 728579. The next prime is 728627. The reversal of 728610 is 16827.

It is an unprimeable number.

728610 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 15 ways as a sum of consecutive naturals, for example, 4389 + ... + 4551.

It is an arithmetic number, because the mean of its divisors is an integer number (55350).

2⁷²⁸⁶¹⁰ is an apocalyptic number.

728610 is an abundant number, since it is smaller than the sum of its proper divisors (1042590).

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

728610 is a wasteful number, since it uses less digits than its factorization.

728610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 728610 is about 853.5865509718. The cubic root of 728610 is about 89.9839477544.

The spelling of 728610 in words is "seven hundred twenty-eight thousand, six hundred ten".