724424 has 16 divisors (see below), whose sum is σ = 1375920. Its totient is φ = 357520.

The previous prime is 724403. The next prime is 724433. The reversal of 724424 is 424427.

It is a self number, because there is not a number n which added to its sum of digits gives 724424.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119 + ... + 1209.

It is an arithmetic number, because the mean of its divisors is an integer number (85995).

2⁷²⁴⁴²⁴ is an apocalyptic number.

It is an amenable number.

724424 is a deficient number, since it is larger than the sum of its proper divisors (651496).

724424 is a wasteful number, since it uses less digits than its factorization.

724424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180 (or 1176 counting only the distinct ones).

The product of its digits is 1792, while the sum is 23.

The square root of 724424 is about 851.1310122419. The cubic root of 724424 is about 89.8112918441.

The spelling of 724424 in words is "seven hundred twenty-four thousand, four hundred twenty-four", and thus it is an iban number.