728250 has 32 divisors (see below), whose sum is σ = 1819584. Its totient is φ = 194000.

The previous prime is 728209. The next prime is 728261. The reversal of 728250 is 52827.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 728250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265 + ... + 1235.

It is an arithmetic number, because the mean of its divisors is an integer number (56862).

2⁷²⁸²⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 728250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (909792).

728250 is an abundant number, since it is smaller than the sum of its proper divisors (1091334).

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

728250 is a wasteful number, since it uses less digits than its factorization.

728250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 728250 is about 853.3756499924. The cubic root of 728250 is about 89.9691252120.

The spelling of 728250 in words is "seven hundred twenty-eight thousand, two hundred fifty".