729712 has 20 divisors (see below), whose sum is σ = 1439640. Its totient is φ = 358208.

The previous prime is 729689. The next prime is 729713. The reversal of 729712 is 217927.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558 + ... + 1330.

It is an arithmetic number, because the mean of its divisors is an integer number (71982).

2⁷²⁹⁷¹² is an apocalyptic number.

It is an amenable number.

729712 is a deficient number, since it is larger than the sum of its proper divisors (709928).

729712 is a wasteful number, since it uses less digits than its factorization.

729712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 834 counting only the distinct ones).

The product of its digits is 1764, while the sum is 28.

The square root of 729712 is about 854.2318186535. The cubic root of 729712 is about 90.0292908776.

It can be divided in two parts, 729 and 712, that added together give a palindrome (1441).

The spelling of 729712 in words is "seven hundred twenty-nine thousand, seven hundred twelve".