729284 has 12 divisors (see below), whose sum is σ = 1331904. Its totient is φ = 348744.

The previous prime is 729271. The next prime is 729293. The reversal of 729284 is 482927.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 729284.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3872 + ... + 4055.

It is an arithmetic number, because the mean of its divisors is an integer number (110992).

2⁷²⁹²⁸⁴ is an apocalyptic number.

It is an amenable number.

729284 is a deficient number, since it is larger than the sum of its proper divisors (602620).

729284 is a wasteful number, since it uses less digits than its factorization.

729284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7954 (or 7952 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 729284 is about 853.9812644315. The cubic root of 729284 is about 90.0116857254.

Adding to 729284 its sum of digits (32), we get a square (729316 = 854²).

The spelling of 729284 in words is "seven hundred twenty-nine thousand, two hundred eighty-four".