724512 has 24 divisors (see below), whose sum is σ = 1902096. Its totient is φ = 241472.

The previous prime is 724499. The next prime is 724513. The reversal of 724512 is 215427.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (724513) by changing a digit.

724512 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 3678 + ... + 3869.

It is an arithmetic number, because the mean of its divisors is an integer number (79254).

2⁷²⁴⁵¹² is an apocalyptic number.

It is an amenable number.

724512 is an abundant number, since it is smaller than the sum of its proper divisors (1177584).

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

724512 is a wasteful number, since it uses less digits than its factorization.

724512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560 (or 7552 counting only the distinct ones).

The product of its digits is 560, while the sum is 21.

The square root of 724512 is about 851.1827065912. The cubic root of 724512 is about 89.8149283304.

Adding to 724512 its reverse (215427), we get a palindrome (939939).

The spelling of 724512 in words is "seven hundred twenty-four thousand, five hundred twelve".