724449 has 16 divisors (see below), whose sum is σ = 1091520. Its totient is φ = 423360.

The previous prime is 724447. The next prime is 724453. The reversal of 724449 is 944427.

724449 = 82² + 83² + ... + 139².

724449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 724449 - 2¹ = 724447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579 + ... + 1335.

It is an arithmetic number, because the mean of its divisors is an integer number (68220).

2⁷²⁴⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

724449 is a deficient number, since it is larger than the sum of its proper divisors (367071).

724449 is a wasteful number, since it uses less digits than its factorization.

724449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800.

The product of its digits is 8064, while the sum is 30.

The square root of 724449 is about 851.1456984559. The cubic root of 724449 is about 89.8123249668.

The spelling of 724449 in words is "seven hundred twenty-four thousand, four hundred forty-nine".