724720000 has 80 divisors (see below), whose sum is σ = 1804344300. Its totient is φ = 289856000.

The previous prime is 724719929. The next prime is 724720019. The reversal of 724720000 is 27427.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 75471 + ... + 84529.

Almost surely, 2^724720000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 724720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (902172150).

724720000 is an abundant number, since it is smaller than the sum of its proper divisors (1079624300).

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

724720000 is an frugal number, since it uses more digits than its factorization.

724720000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9093 (or 9066 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 724720000 is about 26920.6240640889. The cubic root of 724720000 is about 898.2352249104.

Adding to 724720000 its reverse (27427), we get a palindrome (724747427).

The spelling of 724720000 in words is "seven hundred twenty-four million, seven hundred twenty thousand".