724375240 has 16 divisors (see below), whose sum is σ = 1629844380. Its totient is φ = 289750080.

The previous prime is 724375229. The next prime is 724375241. The reversal of 724375240 is 42573427.

It can be written as a sum of positive squares in 2 ways, for example, as 658538244 + 65836996 = 25662^2 + 8114^2 .

It is a junction number, because it is equal to n+sod(n) for n = 724375196 and 724375205.

It is not an unprimeable number, because it can be changed into a prime (724375241) 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, 9054651 + ... + 9054730.

Almost surely, 2^724375240 is an apocalyptic number.

It is an amenable number.

724375240 is an abundant number, since it is smaller than the sum of its proper divisors (905469140).

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

724375240 is a wasteful number, since it uses less digits than its factorization.

724375240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18109392 (or 18109388 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 34.

The square root of 724375240 is about 26914.2200332835. The cubic root of 724375240 is about 898.0927677339.

It can be divided in two parts, 72437 and 5240, that added together give a palindrome (77677).

The spelling of 724375240 in words is "seven hundred twenty-four million, three hundred seventy-five thousand, two hundred forty".