729912 has 32 divisors (see below), whose sum is σ = 1933200. Its totient is φ = 228864.

The previous prime is 729907. The next prime is 729913. The reversal of 729912 is 219927.

It is a self number, because there is not a number n which added to its sum of digits gives 729912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729913) by changing a digit.

729912 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487 + ... + 1302.

2⁷²⁹⁹¹² is an apocalyptic number.

It is an amenable number.

729912 is an abundant number, since it is smaller than the sum of its proper divisors (1203288).

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

729912 is a wasteful number, since it uses less digits than its factorization.

729912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815 (or 1811 counting only the distinct ones).

The product of its digits is 2268, while the sum is 30.

The square root of 729912 is about 854.3488748749. The cubic root of 729912 is about 90.0375152243.

The spelling of 729912 in words is "seven hundred twenty-nine thousand, nine hundred twelve".