724312 has 16 divisors (see below), whose sum is σ = 1395360. Its totient is φ = 352224.

The previous prime is 724309. The next prime is 724313. The reversal of 724312 is 213427.

It is a self number, because there is not a number n which added to its sum of digits gives 724312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724313) 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, 928 + ... + 1519.

It is an arithmetic number, because the mean of its divisors is an integer number (87210).

2⁷²⁴³¹² is an apocalyptic number.

It is an amenable number.

724312 is a deficient number, since it is larger than the sum of its proper divisors (671048).

724312 is a wasteful number, since it uses less digits than its factorization.

724312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490 (or 2486 counting only the distinct ones).

The product of its digits is 336, while the sum is 19.

The square root of 724312 is about 851.0652148925. The cubic root of 724312 is about 89.8066631630.

Adding to 724312 its reverse (213427), we get a palindrome (937739).

The spelling of 724312 in words is "seven hundred twenty-four thousand, three hundred twelve", and thus it is an iban number.