724400 has 30 divisors (see below), whose sum is σ = 1741332. Its totient is φ = 289600.

The previous prime is 724393. The next prime is 724403. The reversal of 724400 is 4427.

It is not an unprimeable number, because it can be changed into a prime (724403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 506 + ... + 1305.

2⁷²⁴⁴⁰⁰ is an apocalyptic number.

It is an amenable number.

724400 is an abundant number, since it is smaller than the sum of its proper divisors (1016932).

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

724400 is a wasteful number, since it uses less digits than its factorization.

724400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829 (or 1818 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 724400 is about 851.1169132381. The cubic root of 724400 is about 89.8103000241.

Adding to 724400 its reverse (4427), we get a palindrome (728827).

The spelling of 724400 in words is "seven hundred twenty-four thousand, four hundred", and thus it is an iban number.