728874 has 12 divisors (see below), whose sum is σ = 1579266. Its totient is φ = 242952.

The previous prime is 728873. The next prime is 728881. The reversal of 728874 is 478827.

It can be written as a sum of positive squares in only one way, i.e., 710649 + 18225 = 843^2 + 135^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (728873) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 20229 + ... + 20264.

2⁷²⁸⁸⁷⁴ is an apocalyptic number.

728874 is an abundant number, since it is smaller than the sum of its proper divisors (850392).

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

728874 is a wasteful number, since it uses less digits than its factorization.

728874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40501 (or 40498 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 728874 is about 853.7411785781. The cubic root of 728874 is about 89.9948145161.

Subtracting from 728874 its reverse (478827), we obtain a cube (250047 = 63³).

The spelling of 728874 in words is "seven hundred twenty-eight thousand, eight hundred seventy-four".