728470 has 16 divisors (see below), whose sum is σ = 1326528. Its totient is φ = 288000.

The previous prime is 728437. The next prime is 728471. The reversal of 728470 is 74827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728471) 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 7 ways as a sum of consecutive naturals, for example, 595 + ... + 1345.

It is an arithmetic number, because the mean of its divisors is an integer number (82908).

2⁷²⁸⁴⁷⁰ is an apocalyptic number.

728470 is a deficient number, since it is larger than the sum of its proper divisors (598058).

728470 is a wasteful number, since it uses less digits than its factorization.

728470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 728470 is about 853.5045401168. The cubic root of 728470 is about 89.9781840126.

The spelling of 728470 in words is "seven hundred twenty-eight thousand, four hundred seventy".