728464 has 20 divisors (see below), whose sum is σ = 1540080. Its totient is φ = 331040.

The previous prime is 728437. The next prime is 728471. The reversal of 728464 is 464827.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1894 + ... + 2245.

It is an arithmetic number, because the mean of its divisors is an integer number (77004).

2⁷²⁸⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

728464 is an abundant number, since it is smaller than the sum of its proper divisors (811616).

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

728464 is a wasteful number, since it uses less digits than its factorization.

728464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158 (or 4152 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 728464 is about 853.5010251898. The cubic root of 728464 is about 89.9779369786.

The spelling of 728464 in words is "seven hundred twenty-eight thousand, four hundred sixty-four".