724396 has 12 divisors (see below), whose sum is σ = 1281448. Its totient is φ = 358272.

The previous prime is 724393. The next prime is 724403. The reversal of 724396 is 693427.

724396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (724393) 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, 546 + ... + 1321.

2⁷²⁴³⁹⁶ is an apocalyptic number.

It is an amenable number.

724396 is a deficient number, since it is larger than the sum of its proper divisors (557052).

724396 is a wasteful number, since it uses less digits than its factorization.

724396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968 (or 1966 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 724396 is about 851.1145633815. The cubic root of 724396 is about 89.8101347186.

Adding to 724396 its sum of digits (31), we get a palindrome (724427).

The spelling of 724396 in words is "seven hundred twenty-four thousand, three hundred ninety-six".