728600 has 24 divisors (see below), whose sum is σ = 1694460. Its totient is φ = 291360.

The previous prime is 728579. The next prime is 728627. The reversal of 728600 is 6827.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

728600 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 5 ways as a sum of consecutive naturals, for example, 1622 + ... + 2021.

2⁷²⁸⁶⁰⁰ is an apocalyptic number.

It is an amenable number.

728600 is an abundant number, since it is smaller than the sum of its proper divisors (965860).

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

728600 is a wasteful number, since it uses less digits than its factorization.

728600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659 (or 3650 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 728600 is about 853.5806933149. The cubic root of 728600 is about 89.9835360830.

The spelling of 728600 in words is "seven hundred twenty-eight thousand, six hundred".