728750 has 40 divisors (see below), whose sum is σ = 1518264. Its totient is φ = 260000.

The previous prime is 728747. The next prime is 728771. The reversal of 728750 is 57827.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13724 + ... + 13776.

2⁷²⁸⁷⁵⁰ is an apocalyptic number.

728750 is an abundant number, since it is smaller than the sum of its proper divisors (789514).

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

728750 is a wasteful number, since it uses less digits than its factorization.

728750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 728750 is about 853.6685539482. The cubic root of 728750 is about 89.9897107579.

It can be divided in two parts, 7287 and 50, that added together give a palindrome (7337).

The spelling of 728750 in words is "seven hundred twenty-eight thousand, seven hundred fifty".