728210 has 32 divisors (see below), whose sum is σ = 1527552. Its totient is φ = 244800.

The previous prime is 728209. The next prime is 728261. The reversal of 728210 is 12827.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 728210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7019 + ... + 7121.

It is an arithmetic number, because the mean of its divisors is an integer number (47736).

2⁷²⁸²¹⁰ is an apocalyptic number.

728210 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

728210 is an abundant number, since it is smaller than the sum of its proper divisors (799342).

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

728210 is a wasteful number, since it uses less digits than its factorization.

728210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 728210 is about 853.3522133328. The cubic root of 728210 is about 89.9674779613.

The spelling of 728210 in words is "seven hundred twenty-eight thousand, two hundred ten".